I chose eight because we've only been sleeping on the mattress for about 10 days so far so good it's very soft if you sit on the edge but it hold your body weight nice one laying down I surmise that it's going to take 60 to 75 days to really see if this mattress fits are sleeping style I will update this feedback as necessary good day
The bed is super comfortable. My son has been sleeping all night and no more back aches. This is our second bedroom to get a T&N and will definitely continue buying