Note, hubby & I are plus size people. 
Hes a stomach & side sleeper. I am a side/stomach sleeper. 
I hug the edge when I go down for the night. I have very good support under our mattress, but I can see our edges wearing down faster where I hug the edge to sleep and where we roll out of bed. 
It's been 10 solid nights of sleep & I dont think we should be experiencing this already. 
However, I do find this mattress really comfortable and my husband loves the support he has even as a big guy. 
We got a firm mattress as we do like a firm setting. This feels a little less firm and more medium-firm. 
Would I buy this type again? Probably not. Am I happy we got this? Yes, it is comfortable and we wake up refreshed.