I got my Tuft & Needle bed 3 weeks ago. I have scoliosis, a 14 degree curve on my spine. Ever since I got the bed I have not waken up with any upper back pain/discomfort. The bed is the perfect balance between comfort and support. I am 5'5" and weigh 162lbs. I just wish I had bought the queen vs the full. I am using a old futon bamboo frame and it could have supported a queen.
The ordering process and the rolled up mattress was easy to unwrap and lay on the box springs. It has provided a very nice feel to sleep on...not too firm but firm enough.