I was nervous to make this big purchase. But after researching I went with Helix. I followed the Quiz recommendation on the Sunset Luxe. I love this mattress and it is sooo comfortable. Don’t have trouble sinking in so much that I can’t move. I paid extra for the cooling cover but if I had a do over I would not do the upgrade. Not sure it helps enough to make it worthwhile. The challenge now is to find a pillow that I love as much. I am very happy with my purchase.