Purple and Casper belong to the same product category. For a medium-firm feel, they are excellent choices. These two mattresses can easily fit on adjustable bed bases. If you like quilted foam, you may prefer these popular sleep surfaces. US residents can enjoy hassle-free shipping on both beds. These models come with an exceptional warranty. You may test out the feel of the mattresses during the at-home trial. You can avail bed-in-a-box facility with both products.