Was very sceptical at first based on biased reviews but with the return policy I couldn’t loose. I’m happy to say your never getting it back! It’s as comfortable as you could imagine. Firm like a mattress but soft like a pillow top and shifting you don’t feel across the bed.
Yes it inflated fast and yes there is a chemical smell but it’s not horrible it’s made from chemicals and is all foam what else would you expect honestly Smell doesn’t last forever and yes the protection cover can slide but it’s not noticeable with a tight fitted sheet 
I took the plunge you should too more rested yes and body feels less sore in the morning yes highly recommended!!!