Sleep Number, with the adjustable base. In bed is the only place I'm pain free these days since my ruptured disc. I'm a side sleeper, and my setting is 50. Back sleepers use 75 or so. If I'm just not comfortable some night for whatever reason, I can bump it up or drop it by 10 and it's like having a whole different bed. We sleep with the head raised about two inches - makes for much better breathing. We don't have all the sensing and reporting gizmos; they came out after we bought this one.
We started with one of their lower models. Liked it so much we upgraded and put the original in the guest room. During our whole-house reno, we had to take our bed apart and move it out of the room. In the process, one cell somehow got a puncture. Sleep Number sent a replacement immediately, no questions asked. That's the only problem we've had in something like 20 years now.
