After visiting a half dozen stores and twice as many web sites we decided on the Tempur-Choice Luxe with adjustable base. Seems like they took what Sleep Number failed on ( center divider, construction, etc. ) and improved on it. 5 years to back it up 100 %. Thanks to all for you insight. http://www.tempurpedic.com/tempur-choice-collection/tempur-pedic-tempur-choice-luxe.asp