<human>: I'm looking to buy a new mattress. What are the best brands?
<bot>: The best mattress brands include Casper, Tuft & Needle, Leesa, and Purple. Each of these mattresses offer unique features that make them stand out from the rest. Casper is known for its memory foam mattresses which provide superior comfort and support, while Tuft & Needle offers adjustable beds with air technology to help you get the most out of your sleep experience. Leesa is known for their luxury mattresses made with organic cotton and wool, while Purple offers a range of hybrid mattresses designed to combine the best of both foam and coil mattresses.