The Bottom LineEndy and Tempurpedic Flex Elite are completely different in their design and feel. Tempurpedic Flex Elite is a plush mattress, ideal for side sleepers. Endy is firmer and best for you if you snooze on your stomach or back. Being an all-foam mattress, Endy retains more heat than Flex Elite. However, there are many mattresses on the market that offer better value for money such as Leesa, Sapira, Saatva and many more!