I do love my futon, however it is a bit too cushy. Every one complains that there futon is too hard so I bought a nice thick one. Now that I have it, I now believe that the 10 in. might be better. Maybe it would be a bit firmer. I would buy one again if I needed to but, I would choose the 10 in. mattress. Plus if you are going to buy a 12" full size futon mattress, I would buy a QUEEN size futon frame to go with it. It will fit better than the full size frame.