We have owned this bed for just over a year, after 6 months noticeable dipping in the mattress with a huge hump in the middle, we bought the kingsize. I have a medium support and my husband has firm support, neither sides support anything. We are both suffering back and neck pain from the bed and have not had a good nights sleep in months. Contacted Kingsdown and they referred us back to the supplier, Art Van - they sent a service person out and he told us we had a quarter of an inch to go before it was considered defective. I don't think it will break down that 1/4" to allow us to exchange. Has gotten so that we are now researching for a new bed and willing to toss this one to the curb..

We spent almost $4000 on our Kingsdown two months ago. it is the worst decision of my life. Wayyyyyy tooooo soft. No support. You wake up feeling tired. A never had back problems, now i do. My wife has bursitis in her hips. Please save your money. I cannot beg you enough

I purchased a Kingston "SLEEP TO LIVE; CHAIRMAN", ROYAL AND NAVY FIRMNESS, which is a very new model as of the end of 2010, we read mostly bad reviews, but all of those reviews were of the previous models before Kingsdon did some major revamping. Creating new mattresses. I am writing this review almost a year later because I feel guilty for complaining about our mattress in some review when we first slept on it, it hurt our backs. But after a month of getting used to it, my wife and I absolutely love it! It is by far the best mattress we have ever slept on. Feels like something you would feel in a Four Seasons Hotel Presidential Suite. We love that we each were able to choose our own firmness sides. My only issue is we are about to move back to Ohio from Las Vegas and this is not only the most comfortable (after the initial few weeks of our bodies becoming used to what a high quality mattress feels like) but this is also the most heavy mattress I've ever felt. What a pain in the ass to find a fitted sheet too! 20"+ deep! But absolutely no regrets, a great investment, expensive, but worth it. We recommend trying it at the store. We bought ours at MATRESS Firm, who by the way have good prices but always will try and up sell you. Tell them to leave you alone while you find a few mattress you like, then they can talk to you. Also this mattress brand does a body test to tell you what firmness will be good for you. We didn't use it, we went with what we liked laying on in the store. I knew I like soft for my painful wide shoulders and my wife likes firm for her lower back. Have them deliver it for free! Heavy! Also invest in the memory foam pillows, wow! But I think we could gotten them cheaper elsewhere, maybe, mine was $200 and my wifes, the smaller one was $150. But worth it. We were sleeping on an air mattress for 7 months before I bought us this, and a beat up sunken spring mattress before that, we paid $200 for from Mexicans in Vegas. Whoops, get what you pay for. So check out SLEEP TO LIVE , CHAIRMAN. It's about one year old now. Don't worry about a newer version, this one is perfect, you don't feel anything in between the two different firmness sections of the bed, I remember reading that in reviews, that must be with the older versions. What makes our mattress very good is not only the memory foam, but the LATEX. Haha. Seriously. That's what's in it. Good luck. We spent few grand.