Feel + firmness
TieThese are opposite constructions aiming at the same buyer. Saatva Classic is a dual-coil innerspring with a pillow-top, and you choose your firmness at purchase — Plush Soft 3/10, Luxury Firm 6/10, or Firm 8/10. You lie on it rather than in it: springy, responsive, easy to roll across. The TEMPUR-Adapt 2.0 Medium Hybrid comes in one feel — Tempur publishes it simply as Medium rather than as a number — built as a TEMPUR-ES comfort layer over 1,000+ pocketed coils in an 11″ profile. It is a hybrid, not an all-foam bed, but the top layer is the real TEMPUR material and it behaves like it — slow to respond, molding to your outline over about a minute.
The practical difference is response speed. Saatva pushes back immediately, which combo sleepers and anyone who repositions a lot will prefer. Tempur takes its time and holds the shape, which is exactly what deep-contour buyers are paying for and exactly what makes turning over feel like more work. Tempur's own listed drawback is that the deep contour makes position changes harder.
We're calling this a tie because it is a preference, not a quality gap. If you have slept on a TEMPUR bed before and liked it, nothing else reproduces it. If the phrase 'stuck in foam' makes you tense, Saatva is the safer bet — and the three firmness options mean you can aim it at your sleeping position instead of hoping medium works.

