I have found that a no flip mattress does not hold up well. I have purchased 2 in the last 5 years. The first one only lasted six months untill it already had sink holes in it. We sent it back and got a different kind. This one I have had for about 4 years and now it has sink holes in it. I am not a very large person either. I think it is best to have one that can be fliped.
NOTE: the reviewer indicated that they are affiliated with Mattress Buying Tips