TL;DR — desk pain daily, pick A. Occasional soreness or gift, pick B. Heat is the decider: only A has sustained heat.
| Round | A 9.8 | B 9.2 | Winner |
|---|---|---|---|
| Kneading depth | 4D, deep | 2D, gentle | A |
| Heat | 104F sustained | None | A |
| Battery | 5.5 hr real | 2.5 hr | A |
| Weight / noise | 480g / 38dB | 320g / 35dB | B lighter |
| Price | $49 | $29 | B cheaper |
Math: at daily use over a year, A costs ~13c/day, B ~8c/day — pay 5c more for heat + double battery. That is why 9/10 readers pick A.
