I purchased a Sleeptronic basic mattress which had a 20 year warranty. Within a year it was horrible. I returned it to place of purchase. They gave me a small credit towards purchasing a "more expensive" mattress stating that it had to be used towards the purchase of another Sleeptronic set. I added an additional $500 for the Angels Dream set. Before 6 months was up, this mattress was also horrible. It sagged down the middle, making you roll when lying down. I again contacted the store only to learn that they no longer carried the... read full review »