While I am no expert at determining which are best, spring or memory foam matresses... This bed is truly the best of both worlds. It has a soft memory foam top layer that makes getting into bed truly comfortable, and a stable spring below to provide support for a long night of rest. With 90 degree days the mattress has been a cool surface all night, and 10/10 would reccommend. Like most mattress I've had I did not need to add an additional topper for comfort.