Infinity Prelude vs Synca Kagra 4D
Synca Kagra 4D leads on our weighted scoring by 1.5 points over Infinity Prelude. Infinity Prelude costs $5,000 less — about 50% — so the question is whether what Synca Kagra 4D adds is worth that to you. They separate most on price (Infinity Prelude), overall score (Synca Kagra 4D) and track — those are the rows worth reading closely. In short: Synca Kagra 4D for buyers who want flagship massage and furniture looks; Infinity Prelude for first-time buyers who prioritize stretch programs over roller sophistication.
| 2 products |  Infinity Infinity Prelude |  Synca Wellness Synca Kagra 4D |
|---|---|---|
| Price | $4,999 | $9,999 |
| Overall score | 7.2 | 8.7 |
| Track | Near-flat reclining S-track | Hybrid track |
| Rollers | 4-node back mechanism (2D-style; no 3D/4D stated) | 4D |
| Zero gravity | Yes | Yes |
| Heat | Lumbar heat | Yes |
| Auto programs | 6 auto programs + full manual mode | Multiple auto programs |
| Max user height (in) | 74" optimal max (range 59"–74") | ~6'4" |
| Warranty (yr) | 5-yr frame / 3-yr parts / 1-yr in-home labor | Up to 4 years |
| Reclined length | 32" W x 52" D upright (72" reclined) | Furniture-grade footprint |
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Infinity
Infinity Prelude
Best for First-time buyers who prioritize stretch programs over roller sophistication
$4,999
Synca Wellness
Synca Kagra 4D
Best for Buyers who want flagship massage and furniture looks
$9,999$10,999