Having owned Tempur-Pedic products since 2000 and having to replace our 23 year old Tempur-Pedic we were amazed at the new things offered. We have opted to get the split king as we are in our 70s and would have the best beds if we were to become bed bound. We have the Split King with the Tempur-Pedic-Ergo Extend Smart Base. Best of the best. We had a regular Tempur-Pedic king on a regular frame for 23 years. If this great set up lasts us as long we will be totally thrilled. Sleeping like a baby in this new bed.