I am sorry to say that we also had a bad experience. Not only the product hasn't delivered the promised "no more back pains", but now after only 2 years and 2 months of purchase (we did not assemble it until a few months later when we moved), the pump has gone dead.
I can blame my back pain on little of exercising, bad posture... but we paid a very high price for a pump that stops working for no apparent reason after only 2 years of use. New buyers beware, the company only ocvers 98% of the cost of the pump in the first 2 years, after that only 72% ($114.83 withTx&S&H) with 4% reduction every year after.
Ohhh, wait!! Maybe the pumps are not made for uncomfortable costumers who actually can't stick with only one pressure setting because the bed is not any more comfortable than any other.