Tried every mattress in the purple store and loved the premier plus-I am a side sleeper and this mattress offered the best comfort for slide sleeping (along with the 4" model). The mattress we had delivered is way too firm-much firmer than in the store. I wake up every morning with bad shoulder and neck pain-feels like I'm sleeping on the hard floor with a pillow topper. There is no "give" in the mattress to allow my shoulder to sink in. Very disappointed... sending it back.