Can you feel the difference between varying densities of memory foam mattresses?

Yes. The higher density of a memory foam mattress, the more support and body-moulding performance it offers. There is a massive difference in densities in the memory foam mattress market, with the lowest priced examples ranking at around 2lb mark, and the very highest priced around 5lb. Ergo Flex™ memory foam mattresses use 5.3lb (85kg/m3) density foam, offering a high quality performance at a remarkable price. See our Ergo Flex™ Mattress versus Market Leader page for more information on this.