I'm looking for a recommendation for a good mattress. Does anyone have any suggestions for the best value for the dollar? I have chronic back pain and am willing to spend for quality, but I don't want to overspend or go cheap. I find I have to replace my mattress more often than the recommended seven years as my back is so sensitive.

I had been buying from the Original Mattress Factory when I lived in Ohio, but I have moved. I'm overwhelmed by all the choices on the market.

In the past, I've purchased a firm mattress and put a 3" memory foam topper on top. I don't think I want an air mattress or a full memory foam one, but I am open to suggestions.