Love this mattress.... its firm, but yet, it gives in, at your heavy parts, like hips when turning....but provides support around a larger area as the push top does allow you to sink a bit.  IMO, the mix of coils and foam is the best of best worlds.  Both serve a purpose, they compliment each other, unless you like very soft, then u can get away with foam only.  Of course, you can use springs with an adjustable bed, so consider that... mattresses are so personal, what works for one, is horrible for another, depends on your weight, skeletal issues, age, etc.   For me, perfect mattress.