Don't Buy This Bed!

My wife and I were in the market for a new mattress after 8 years on our old one. Having recently turned 50 I wanted to get a top of the line mattress that would give me a decent nights sleep even when I was feeling the occasional aches and pains associated with being a little older. We purchased the Stearns and Foster Reserve No 3 from a local retailer and though it was pricey, we were told it was a solid mattress and would give us a restful nights sleep for years to come. First off the mattress is a monster and weighs a ton. We moved into a new house and the mattress was leaning against the wall before we got our new bedframe. I had to wrestle the bed by myself to the frame and it was almost an impossible feat. The pain in my mid and lower back started on night number 2. We've had the mattress now for 3 full months and my pain is at the point now where I can only sleep on my left side as the pain there is only moderate. I've NEVER had this kind of persistent back pain in my life and it is not due to an injury or overuse. I am convinced it's the mattress. I've been researching beds on line the last few days and have told my wife we need to get rid of this mattress because it's killing me. The Saatva Luxury Medium Firm is the best rated mattress for side sleepers and those with back pain. We may go in that direction. Either way - I can't sleep another night on the S&F and we will put it in our guest bedroom. At least it will keep visitors from staying too long!