Bought the queen size and after approximately two years started to get a body depression in the middle. I am 280 lb so maybe to be expected? Well, by year three was too bad for two people to sleep on it. We contacted Sleep Country warranty claim service, as we bought it at a local Sleep Country Store. They sent us a link to the website and we filed the appropriate pictures and information. 4 days later we got an email authorizing full replacement cost for a mattress of our choice. So while I feel the mattress may not be the best as far as our experience goes the customer service was excellent. The warranty did exactly what it was set up and said to do.

This was the most expensive matress in the showroom. The sales person ever so smugly mentioned how Kingsdown puts all of their money into R&D and that's why we had never heard of them. Within a year the matress developed body sags even with rotating it. My wife has had to start seeing a chiropractor for her back pain. We would have got a new matress sooner if this one didn't destroy out wallet so effectively between the matress itself and the chiropractor. I wouldn't recommend this brand to anyone.

I got my 1st kingsdown in 1996. It was a XL twin and I still love it. Bought my 2nd Kingsdown last month as a kingsize. My mate and I both move in our sleep and often wake up in the middle of the night. We are sleeping though the night better. Neither of us is sore in the morning. That is a real plus.
The mattress is firm yet very comfortable.