We have a FloBed natural Latex bed we like, but that's too much money for a guest bedroom futon, as it won't be slept on that much. We'd like a queen-sized convertible sofa/futon bed for the guest room. We've found a couple of frames we can live with, but the mattresses are the question. The basic mattresses are pretty poor.

Duane's advice is to buy either good, high level mattresses, or hotel grade and dump them after a few years. We'd like to follow the latter course.

The problem is,
1. How do I buy a hotel-grade mattress? Do I go to a local mattress store and ask for one? Do I order it sight unseen online?
2. Do I assume the hotel-grade queen mattress will fit on the queen-sized futon and that it will bend into a couch shape, then not destroy the mattress functionality?

Thanks.