Infinity Riage 4D vs Osaki Platinum Solis Duo 4D+
Osaki Platinum Solis Duo 4D+ leads on our weighted scoring by 0.4 points over Infinity Riage 4D. Infinity Riage 4D costs $3,000 less — about 25% — so the question is whether what Osaki Platinum Solis Duo 4D+ adds is worth that to you. They separate most on price (Infinity Riage 4D), overall score (Osaki Platinum Solis Duo 4D+) and track — those are the rows worth reading closely. In short: Osaki Platinum Solis Duo 4D+ for buyers who want Osaki's most capable mechanism and stretch recline, regardless of price; Infinity Riage 4D for shoppers who want 4D performance without Japanese-flagship pricing.
| 2 products |  Infinity Infinity Riage 4D | |
|---|---|---|
| Price | $8,999 | $11,999 |
| Overall score | 8.3 | 8.7 |
| Track | L-track | Flexible track system (SL-based, reclines to 190°) |
| Rollers | 4D back mechanism (adjustable width, length, intensity, speed) | Dual 4D mechanisms (2 separate mech controllers) |
| Zero gravity | Yes, 2 recline levels | Yes (zero gravity reclining) |
| Heat | Lumbar heat | Lumbar graphene heating (~75–83°F) |
| Auto programs | 10 choreographed auto programs | 18 auto programs + 5 manual styles |
| Max user height (in) | 74" optimal max (range 59"–74") | — |
| Warranty (yr) | 5-yr frame / 3-yr parts / 1-yr in-home labor | 5 years (3 years full service + 2 years parts) |
| Reclined length | 30" W x 59" D upright (69" reclined); Zero Wall Fit | 30" W × 63" L × 48.4" H upright (81" L reclined); 10" wall clearance; 30" min doorway |
We may earn a commission when you purchase through links on our site. This does not influence our scoring methodology or recommendations.
Infinity
Infinity Riage 4D
Best for Shoppers who want 4D performance without Japanese-flagship pricing
$8,999
Osaki
Osaki Platinum Solis Duo 4D+
Best for Buyers who want Osaki's most capable mechanism and stretch recline, regardless of price
$11,999