I'm a side sleeper, about 165 lbs. I tried a bunch of different ones at various stores and my preference is probably a 3 out of 5 in terms of firm/plushness. 

The mattress is spot on. I have recurrent insomnia and so far it's reduced the amounts of times I've woken up and what sleep I've had has been fitful. No back or side pains. When I am in bed, I feel equal amounts of support and softness.

Great hybrid mattress. In stores they are crazy expensive!