Lifescape by Sleeplogic 6300 hd king size

I bought this mattress brand new. It has been about a year and it I am now certain I made a terrible decision for my wife and I. The mattress head area has two deep impressions where we sleep, our feet are higher than our heads ( by a lot probably 10-12 degrees when using a 6 foot straight edge). It is not a cheap mattress I believe we paid close to $2000 dollars. It is not supportive, the mattress has deep impressions where your head and chest lay (heaviest part of your body). I way 150 lbs. so a person weighing more could eventually be sleeping at a 45 degree angle. Do not buy this mattress it is terrible our backs hurt on a regular basis and now we are certain it is the mattress. We slept at a friends home and pain went away after a few days away from this piece of Sh!+ mattress! Buyer beware we bought it from mattress warehouse in Niles, Mi.