We love the hybrid option and cooling top. The firmness is comfortable for both of us and we both sleep on side, stomach and back. We went with the split king and adjustable base. We love being able to adjust our own sides to our personal preferences but the mattresses easily shift apart and often have to be pushed back together. The bar at the bottom of the bed seems to fall out quite a bit and is frustrating to get back on with the mattress and bedding on.