We purchased a Sleep Number bed last Memorial Day and it was the best purchase we have ever made. We went to a place called Mattress Firm. They have both Tempurpedic and Sleep Number. We originally went in to buy a Tempurpedic because they were having a sale, it was 3 years no interest. We laid on all the beds there, we were there for 3 hours. I have pretty severe neck trouble and after getting my number right I have slept better than I have in years. I have to have a soft bed, my husband calls it my gulley and he likes a firm bed. We were changing beds every two years. Each time we were buying good, top of the line beds.
I will say that is there are two of you sleeping on it and one likes it soft and one likes it hard then you will need to call Sleep Number and get an insert. They are provided free and are easy to install.
If you both have different firmness levels or neck, back problems then Sleep Number may be the way to go. Take your time, go together and lay on all of them. We ended up having to buy the most expensive, not due to quality but it really did feel better on my neck.
Good luck. PM me if you have any more questions.
Carol