I am a partial rotisserie sleeper; I sleep on my sides and my back, but never on my stomach.
I have never tried the most popular and expensive UL pads, but everything else I have ever used is hard to adjust for an inflation that works both for back sleeping and side sleeping over the course of an evening. If inflated for side sleeping, the pad is over inflated for back sleeping. If inflated for back sleeping, the pad is under inflated for side sleeping. Annoying!
My fix has been to often bring along a three-quarter length roll of Evazote. Extra weight and an extra item to pack, but man, does it increase comfort!