I rated the Neoair All Seasons perfect on *sleeping* comfort, could not fault it, very comfortable, not slippy, although it did take a few nights to find the "just right" inflation between too-hard sleeping, yet if I made it "just right" sleeping I'd then hit ground with my bum when I sat up for breakfast cooking. In the end I would alter the inflation between the 3 modes (sleeping, sitting up and using with a chair). I later bought a Thermarest Lite Seat to replace the foam folding mat I'd used for years to help with the sitting part, place under the mat where I was sitting, rather than reinflate the mat.
The All Seasons reflection of the body heat back to oneself is real. That has given me confidence in the general principals Thermarest are using with baffles and reflective material.
I didn't find it crinkly noisy particularly, and it is less noisy than the Xlite I just tried for 5mins and returned.
Why I sold it was it packed large, and I got a buyer who offered what I paid for it and I had the Xtherm around the corner and didn't need backpacking warmth for a while.
Also for me, from a total-camping-experience perspective, I owned the Trekker Chair, and loved it with the Prolite and tried it with the All Seasons and that didn't work out at all well, the All Seasons valve in the chair was poking my shoulder. The All Seasons and the Trekker Chair also don't get along in my tent with a low roof, the doubled-up All Seasons underneath meant I was a couple of inches higher inside my tent and the rocking to the side of such a thick base was trickier to get comfortable.
In the colder conditions you have the All Seasons, having a chair is part of hours in the tent, for me at least. I had in my mind's eye extending a generally good working system into colder conditions.
I didn't sell the All Seasons for any reason related to comfort sleeping on.
If it were simply a smaller packed size, I'd have kept it for sure.
Having now seen what Thermarest is doing in making the 15% lighter, by basically taking an aggressive taper, I'm more inclined to say the All Seasons has resumed interest.
I'm really not sure what I want to buy next, I'm just jaded with Thermarest, their innovations this last year seem to be coming with too many compromises, like "too easy" innovations, an aggressive taper is a dumb idea to save weight. I am thinking of a short Prolite (square) and a short Neoair (square, in a sale) and just use them in combination, that covering me for situations like if camping and the Neoair leaks I still got the Prolite, but I'm far from sure. If I get the Neoair Small I ordered then it will adjust my plans vs if its not delivered.