Good night's sleep is worth it
I bought this mattress after I got tendonitis of the hip and was left in agony for weeks. I never realised how bad my sleep was and how bad my previous mattress was until I bought this one.
It's medium firm, ready to sleep on in about 5ish hours. The plasticky, new mattress smell takes a while longer to leave (2 - 3 days) but the good nights' sleep is worth it.