We have now had this mattress for over 7 months and we still like it a lot.
We did a lot of research on beds including searching online and going to test out mattresses in store. We were very nervous about buying online especially since it is so cheap from Amazon but let me tell you, we are glad that we bought this mattress!
I honestly had a hard time getting up the next morning because I slept so well (better than I had in years)! If you are nervous about buying online I would say give this mattress a chance. 7 months into it, the mattress is even more comfortable than when we first got it.