I had one growing up, and I adored it. Toasty warm or not, had a thermostat. While getting into it and lying down is kinda sloshy, once you (and the water) settle, its super comfy. Moving while you sleep isnt a problem, the waves are super brief and pretty minor compared to first laying down. Mine was waveless but still sloshed a tad. I liked it. As did girlfriends.