If it helps any I have an air mattress and it is the pits. I'm heavy and my man outweighs me by a good
80 Ibs heavier than me and when he gets in bed I almost catapault out. I must raise up by 2-3" at least.
Then when he gets up I plummet down and slam into the waterbed frame. I have an electric blanket under
the sheets and it still doesn't warm up enough.
My waterbed blew up last winter and I'm saving up to get another mattress. I personally use the
waveless supreme (next to top of the line) with the heater set on 98. I've had it since 87 and love it.
I'll be getting my 4th mattress since I've owned it but it's worth it. I found that I can get out of bed and
not crawl. The best thing I've ever done for myself. I see they now make regular mattress enclosures
for them., My son had one with water filled baffles in it and he liked it.