Hi Carey,
You can see my thoughts about the bed in a box mattresses in post #2 here. A forum search on “bedinabox” will bring up more comments about them). I would personally mot consider a memory foam mattress that used 3 lb memory foam although they do use a good quality base layer.
Dreamfoam (Brooklyn Bedding) is one of the invited members of this site and like the other members here I consider them to have among the best quality and value in the country and I certainly recommend them both for the quality and value of their mattresses and because they have the knowledge and experience to provide good guidance and help their customer make the bst possible choices. You can read a little more about the Ultimate Dreams 13" gel mattress in this thread and a forum search on “Ultimate Dreams gel” (you can just click this) will bring up more posts as well. It is similar in feel to the Tempurpedic Cloud Luxe apparently but just a bit firmer.
Phoenix