So far the T & N mattress is working just great. I am averaging about an hour more sleep during the night. The mattress is very comfortable. A mattress review at 1 year, 3 years, and 8 years would be much more beneficial to everyone reading these reviews.
I have had this mattress for over two years now and I am in need of a new mattress, quite frankly, any mattress besides this one. About one year after purchasing this mattress my sleep quality declined. My back is constantly in pain and my wife can not stand this mattress. If your looking for a cheap mattress to get you by for about a year or so then maybe you could purchase this or just sleep on a piece of crappy foam both are the same.
This mattress seemed comfortable, but over the time I've had it I've awakened with back pain that wasn't there the night before a distressingly large percentage of the time. Knowing what I know now, I would not have bought it.
Also, it's VERY hard to move/rotate the mattress at all because it's very heavy AND has no handgrips.