I know every so often someone inquires about what type of mattress people have that help to alleviate back or spine pain. I just bought a new inner spring mattress because my neck was bothering me a lot. I'm not sure I made the best decision because I went with a super firm mattress w/o cushioning and as much as the super firmness helps my back the lack of cushioning bugs my bones. Will work on rectifying that.
Meanwhile check this site out:
Unbiased Comparison of Mattress Types 2013 : Advantages and Disadvantages : Bed Pros, Cons : Memory Foam, Latex, Innerspring, Air, Futon, Waterbed, kinds