The obvious difference between memory foam and hybrid mattresses is their construction. Memory foam mattresses are made exclusively of foam, whilst hybrids use foam and springs. Hybrids are typically pricier than all-foam mattresses as the former includes more materials.

GhostBed's Flex Hybrid combines supportive coils with contouring foam for a comfortable feel. Our CNET sleep expert put it to the test to find out whether this high-end mattress is worth your money.

For this Saatva Contour5 Mattress review, I slept on the memory foam bed for two months to test its support, pressure relief, cooling abilities and more.