My husband and I have slept on an old queen mattress for a long time. He started developing back pain, and we were waking each other up with our movements, so we decided it was time to upgrade our mattress. We bought a king Natural Escape mattress after our neighbors let us lie down on theirs. Shipping was fast (about a week). We have slept on the mattress for two nights so far and have two great nights of sleep! The mattress is very comfortable. I would rate is as medium-firm. It definitely has some give, which I like, as I feel like it cradles me. I sleep in multiple positions and find the mattress comfortable in every one of them. We have no back pain or neck pain after sleeping on this mattress. The mattress is good at not transferring motion, so I don't wake up when my husband rolls over. As far as smell, ours had a very light, pleasant and natural smell when we first received it that has dissipated. It smelled similar to the Naturepedic mattress we purchased for my son a few years ago.
We are in love with this mattress and would highly recommend it! It's incredibly comfortable, and I like that we are not sleeping on toxic chemicals. We look forward to going to sleep on it every night and can't believe how much more refreshed we are in the morning.