So far so good my mattress did have the smell for a while but its not very noticeable now. Delivery was very fast 2 days. I have tracked my sleep before when on a standard spring mattress via Fitbit. I am used to only getting 5 to 6 hours a night when I worked 12hr night shifts. I am now working 10hr day shift and with this mattress I can 8 to 9 hours with consistency. Call it what you will but I'll take it.