After buying a very expensive memory foam mattress which did not last very long due to severe dipping in the super king where you sleep, we decided to replace them with Double Sided medium firmness that can be turned. This mattress was unbelievably priced, is comfortable, makes it easy to turnover rather than sleeping in a memory foam dip, is far cooler and I would recommend it to anyone who has developed a bad back through sleeping on a memory foam mattress. The mattress is a medium firmness and is perfect for us, supportive not soft.
A couple of days prior to the delivery from Dreams, Bensons delivered a new super king for another room. Unfortunately they have no recycle/collection service. Luckily Dreams do so they kindly took away 2 super kings and delivered the one we ordered from them.
Delivery guys were great, very polite and gave useful information about use and care, including allowing the matress to breath for a few hour prior to making up the bed.