Reading this thread, it occurred to me that part of the problem with those Neo Airs and their progeny is that they are too thick when mostly inflated, and take up more space in a tent. The thicker air mats also do not work well with a lighter weight shortie, because then the body has to adjust to two different height levels. Good luck with that.
So in a tent, with a durable floor, a ground sheet if you need it, and a shortie Nemo self-inflator, I’ve not had a problem with losing heat to the ground in the shoulder seasons at altitude in the continental US. And I feel more comfortable closer to the ground and the pad takes up less room and leaves more for me in the tent.
When I’ve been cold, it is not from the ground, and use puffies that must be carried anyway to cook and eat, etc.when it gets colder. That includes the puffy top, bottom, slippers, and fleece watchcap, adding to the temp rating of the bag or quilt. Switched to down bags years ago because they are much warmer for weight, even though they require greater care. The difference in warmth for less weight with high quality down was palpable.
Mention these seemingly unrelated matters, because I think the need for the thicker air filled mats to hold heat has become overrated, and as this thread illustrates, is uncomfortable for many others than myself. Insulations can be much thinner, yet hold more heat nowadays. It also helps to pitch in grassy duff, and don’t mind spending a little time finding a good tentsite. So, I’m more comfortable closer to the ground, and don’t have to either pump or huff and puff.
For winter camping, or for sleeping in the open cowboy style, it may be a difference story. But not for me. I’ve found that with food hung up well away, hungry beasts respect human enclosures, and those enclosures may become life savers in freakish weather.