N and I have made the decision to go with a memory foam bed. :>)
I'm excited for the change, but there's quite a bit of preparation to take care of before we make the switch. Our hard side waterbed needs to be converted into a platform bed--screwed down onto the top of our base of 12 drawers (6 on each side). N will make a new wider, free standing, headboard to go with the width of the bed. Then, finally, we'll purchase the sheets and possibly a heated mattress pad. One of the things we love about the waterbed is how it's never (unless a cat unplugs the heater) cold to climb into.
We're not sure how we'll solve the sleeping arrangements during the days without a mattress (it's our understanding memory foam is supposed to be left to expand and gas out for 72 hours). I assume we'll be sleeping in the guest room with the treadmill. Guess I can do without my early morning exercise for a day or 4.