As good as Tim Ferris said it is!! This mattress for us is absolutely fantastic. From the very first night we were impressed with how much more comfortably we slept, woke up with less aches. We chose firm for our personal bed, and the next level down for the guest room. Both are truly incredibly comfortable.
I'm not going to attach a photo, it would just be a picture of a king size bed. But I'm telling you, even when I travel I look forward to coming home to my bed.