I used to use those Therma-Rest Z-Lite or RidgeRest pads because I was young and tough, and they were cheap and warm to sleep on, but then I switched to a classic inflatable like the BaseCamp and I was more comfortable for just a little bit of extra weight. These days though I use the Neo-Air pads, and they're no extra weight and WAY more comfortable, and they pack tighter. I think they sleep a little colder though. Even if I replaced all of my backpacking gear with minimalist ultra-light gear, I wouldn't give up that Neo-Air. It's too comfortable.