The Bottom LineThe Endy, Casper Essential, and Muse, all belong to the same product category. The Casper Essential is the cheapest model by the brand and for some reason is not offered for customers to try in the Casper stores. The Endy is a firmer mattress, more suitable for back and some stomach sleepers. Casper Wave is medium-firm while Muse allows you to select the firmness best suited for your sleep needs. The Muse offers the best value for money and provides a much better sleep experience for all body structures and slumber styles. These all-foam mattresses are equally suitable for bed sharing. The US-made 12-inch thick Muse offers Cold-Wire technology to ensure a more cooling mattress compared to both Endy and Casper Wave. The responsive foams complement the memory foam comfort of the Muse. If the budget is minimal and sleeping hot is not an issue, then Casper could be a reasonable choice. In any other case, Muse will be your best choice, offering great comfort, durability, and heat regulation.