I need a new mattress as the one that I have now is after some years beginning to feel its age. I have been trying to make it last longer by rotating the mattress and during the night I have woken up finding myself at strange angles to use the good parts of the mattress. So I guess the question I need to look at now is what kind of mattress whether it be a foam mattress or an inner spring mattress. I guess it depends on cost I guess.