This is my first bed-in-a-box
This is my first bed-in-a-box mattress purchase. I chose Muse for its all foam construction hoping for some relief from early am discomfort I was having due to a past lung lobectomy. The medium firm seems to have been a good choice. The cover with its PCM is as advertised, however, after a while, the mattress will warm. It is not a "magic bullet". Dealing with Muse has been without issues from purchase through timely delivery. I do recommend them.