Ok... so far so good. Never had a hybrid mattress before the last 2 months .  Just returned a Larsen because it got way too soft after sleeping on it a month. (at first i loved it. but then sides started to go down and my back started to ache.)
So i switched to this one and so far am very pleased.  it is medium and i thought i liked soft. i thought this was too firm initially but back feels great, i sleep thru the night , sides dont go down and wonderful on my stomach sleeping.