by The Amerisleep AS3 is the better pick for most sleepers in this matchup. It matches the Helix Midnight Luxe on pressure relief and beats it on motion isolation (NapLab scores the AS3 10/10 on both) and costs less ($1,149 versus $1,899 for a queen); both offer a 365-night trial, while Helix offers a longer lifetime warranty (per NapLab). The Helix Midnight Luxe earns its premium price tag for two things: coil-reinforced edges and a more breathable hybrid build. If you share a bed and care about pressure relief and motion, the AS3 wins. If you sleep hot, need strong edges for sitting on the side of the bed, or want some springy pushback under you, the Luxe is worth the extra spend.
| Spec | Amerisleep AS3 | Helix Midnight Luxe |
|---|---|---|
| Price (Queen) | From $1,149 | From $1,899 (NapLab) |
| Construction | All-foam (plant-based Bio-Pur) | Hybrid (foam + pocketed coils) |
| Height | 12 inches | 14 inches |
| Firmness | Medium (5/10) | Medium-firm |
| Cooling | 9/10 (NapLab, 85.4°F peak) | Coils aid airflow |
| Motion Isolation | 10/10 (NapLab) | Hybrid; more transfer than all-foam |
| Edge Support | 8.0/10 (NapLab) | Reinforced perimeter coils |
| Trial | 365 nights (30-night minimum before returns) | 365 nights |
| Warranty | 20 years | Lifetime (per NapLab) |
How we rate
These are MattressNut's editorial ratings, based on construction, brand specifications and independent lab data where available (NapLab, for the AS3). They are not results from our own lab tests. Last updated June 2026.
Amerisleep AS3
8.9/10
- Pressure relief 10/10 (NapLab)
- Motion isolation 10/10 (NapLab)
- Plant-based Bio-Pur foam, CertiPUR-US certified
- HIVE 5-zone targeted support under hips and shoulders
- 20-year AS3 warranty; Midnight Luxe coverage is lifetime
- Softer edges (NapLab 8.0/10) than the Luxe's reinforced perimeter coils
- A hybrid like the Luxe usually breathes better (AS3: NapLab cooling 9/10)
- No bounce; sleepers wanting a springy, responsive feel will prefer the Luxe
The AS3 beats the Midnight Luxe on pressure relief and motion isolation, making it the right call for side sleepers and couples at a lower price than the Luxe queen.
Helix Midnight Luxe
8.3/10
- Stronger edge support from reinforced perimeter coils
- Coil airflow and a copper-gel layer for cooling
- Good pressure relief for a hybrid
- 365-night trial, matching the AS3
- Responsive feel with slight bounce; easier to move around on
- Significantly more expensive than the AS3 (queen $1,899 versus $1,149)
- Transfers more partner movement than the all-foam AS3
- Compare warranty terms: lifetime Helix coverage versus 20 years on AS3
The Midnight Luxe earns its premium with reinforced perimeter coils and hybrid airflow. Worth the extra spend only if edge support and cooling are your top two priorities.
Construction and Materials: Bio-Pur Foam vs Pocketed Coil Hybrid
The Amerisleep AS3 is 12 inches tall and built entirely from foam. The Bio-Core base layer resists soft-spot formation over years of use. Above that, the HIVE transition layer does something specific: hexagonal cutouts give the shoulders and hips more cushion and the head, back and legs more support. The Bio-Pur comfort layer on top is an open-cell plant-based memory foam that Amerisleep says breathes better than standard petroleum foam. The Refresh cover wicks moisture from the skin surface.
The Helix Midnight Luxe is 14 inches tall and uses a completely different architecture. The foundation is high-density foam, then roughly 1,000 individually wrapped pocketed coils with zoned lumbar reinforcement and a strengthened perimeter ring. That perimeter ring is what gives it stronger edges. Coil beds simply do not compress as much at the edges because the springs push back. Above the coil unit sit transition foam layers, a copper-gel memory foam layer for contouring and additional cooling, and a plush pillow-top surface. The TENCEL cover is standard; Helix offers a GlacioTex cooling cover upgrade at extra cost.
The material philosophies differ at a fundamental level. Amerisleep prioritizes certifications (CertiPUR-US), plant-based content, and pure pressure relief. Helix prioritizes versatility and performance across a wider range of body types, using coils to add support and airflow that foam alone cannot replicate at this price point.
Firmness and Feel: Medium Foam vs Medium-Firm Hybrid
The AS3 is medium at 5/10. NapLab describes the Midnight Luxe as medium-firm; how firm it feels can vary with body weight. In general, the AS3 contours the shoulder faster and more deeply, which side sleepers below 200 lbs tend to prefer. The Luxe has less sink-in at the shoulder but supports the lumbar better when you roll to your back, because the coils resist the hip-sinking that all-foam beds can allow over time.
The feel difference you notice immediately is bounce. The AS3 has less bounce than the Midnight Luxe. You sink in and stay in your position. The Midnight Luxe has enough coil responsiveness that shifting from side to back takes less effort. Combination sleepers who move around during the night often find that responsiveness worth having, even at the cost of some pressure relief.
For stomach sleepers above 180 lbs, the Luxe wins. The coils resist hips sinking too far into the surface, which is what puts the lumbar in a compromised arched position. The AS3 at medium handles lighter stomach sleepers fine, but heavier stomach sleepers will likely notice hip sag within the first month.
Motion Isolation: AS3 Wins
NapLab measured 2.11 m/s² of motion transfer on the AS3, 76% below its average, and scores it 10/10. Memory foam absorbs vibration by deforming slowly around the disturbance source. Coil springs transfer more because they are mechanically connected through the coil grid, even with individually wrapped pockets.
The Luxe's pocketed coils still isolate motion reasonably well. If you share the bed with a partner who gets up once in the night, you will likely sleep through it. The gap matters for couples where one partner is a very light sleeper or one person has a significantly different bedtime. In those situations, the AS3's 10/10 NapLab motion score makes it the practical choice.
Cooling: Close, With the Edge to Coils for Hot Sleepers
NapLab measured an 85.4°F peak surface temperature on the AS3 and scores it 9/10 for cooling; we have not run our own temperature tests on either bed. The coil cavity underneath the Luxe does allow more airflow than foam alone, and the copper-gel layer conducts heat away from the body faster than standard memory foam.
For moderate hot sleepers, the Bio-Pur open-cell structure in the AS3 is adequate. For chronic hot sleepers who wake up in a sweat more than twice a week, the Luxe's coil airflow is the better structural bet. Adding the GlacioTex cooling cover upgrade from Helix widens that advantage further, though it costs extra.
Edge Support: Clear Helix Advantage
NapLab scores the AS3 8.0/10 for edge support, with 5.5 inches of sitting compression. The Luxe's reinforced perimeter coils hold firmer near the edge, so more of the surface stays usable. For a queen, that difference in usable width is real, and couples who tend to sprawl will feel it over time.
Sitting on the edge shows the difference most. Sitting on the edge to put on shoes or helping kids out of bed, the AS3 compresses visibly. The Luxe holds. This matters for elderly sleepers, heavier sleepers who need the edge for leverage, or anyone recovering from surgery who uses the mattress edge to push off.
Price and Long-Term Value
A queen AS3 is $1,149 on sale ($1,749 regular) with code BFCM ($600 off the AS2, AS3, AS5 and Organica through December 9). A queen Midnight Luxe is $1,899 per NapLab. At these queen prices, the AS3 costs less.
Amerisleep offers a 20-year warranty; Helix lists lifetime coverage for the Midnight Luxe. Warranty length does not guarantee mattress lifespan. Amerisleep covers repair or replacement in years 1–10, excluding labor and transport; years 11–20 offer replacement at 50% of the original purchase price.
The 365-night AS3 trial and 365-night Luxe trial both remove most of the financial risk from choosing wrong.
Who Should Buy Each Mattress
Buy the Amerisleep AS3 if you sleep on your side under 230 lbs, share the bed with a light sleeper, care about materials certifications (CertiPUR-US, plant-based foam), or have a budget closer to $1,000 to $1,400 for a queen. Its 10/10 NapLab scores for pressure relief and motion isolation are hard to beat at this price.
Buy the Helix Midnight Luxe if you sleep hot consistently, need strong edge support for functional daily use, weigh over 230 lbs and want coil support under a foam comfort layer, or sleep on your stomach. The higher price is a real ask, but the edge support and airflow advantages come from the coil build.
Combination sleepers are the one group where I would lean toward the Luxe despite recommending the AS3 overall. The coil responsiveness makes positional changes easier throughout the night. If you move from side to back four or five times per night, the foam feel of the AS3 can feel slightly sticky compared to the Luxe's slight bounce.
Our Verdict
For most sleepers, the Amerisleep AS3 is the right call. It delivers better pressure relief, better motion isolation, and a 20-year warranty at a lower price than the Midnight Luxe. The Helix Midnight Luxe is the better choice only if cooling and edge support are your top two priorities and you are willing to pay for them.