Hi shadowman1jb,
I’m glad you found us before you pulled the trigger on the Comforpedic or the Tempurpedic both of which aren’t the best value compared to other mattresses that use similar of better quality materials and/or sell for better prices.
Some of the better options or possibilities in your area that I’m aware of are listed in post #2 here.
Some other options that are a bit further away if you are in the mood to travel a bit more (or at least call and talk with them on the phone to see if a trip would be worth it) are listed in the Knoxville list in post #2 here and in the Hendersonville/Asheville list in post #4 here and in the Hickory list in post #2 here.
There are also some wholesale manufacturers in the lists (based in NC and TN) that have retail outlet finders on their site which would be worth searching for retailers in your area that carry them.
It would be great if this was possible but the truth is that mattress manufacturers all have access to the same materials so there are dozens of smaller independent or local manufacturers across the country which use good quality materials and sell mattresses with great quality and value that are sold either factory direct or through local sleep shops or online. Any of these would be a better choice than the mattresses that are purchased by the vast majority of consumers. 22 of them are members here but even this is nowhere near a complete list of the “best of the best” across the country and a “top 10” list of manufacturers or better sleep shops would exclude most of the better choices across the country that make and/or sell much higher quality and value mattresses. Many of the better manufacturers are only available locally or regionally and a top 10 list would exclude most areas of the country.
A top 10 list of mattresses would be even more unrealistic because different people have such a wide range of different needs and preferences that trying to put a “top 10” (or even top 100) list of mattresses together would exclude most of the population from finding a mattress that was best suited to their individual needs, preferences, and budget range.
It also wouldn’t take into account that a mattress purchase involves more than just finding the best quality and value because even the best quality and value mattress may be completely unsuitable for a particular person and there are more than 10 different types of people (based on body types, sleeping positions, preferences, and budget ranges). The “best” mattress for any particular person is the one that best “fts” their individual needs and preferences and includes all the objective, subjective, and intangible benefits that come from both the mattress and where you buy it from (see post #46 here). All of these together are part of any mattress purchase and involve more than just the mattress. Who you buy from can be even more important than what you buy.
While It would certainly make my job easier … it just wouldn’t be realistic 
Phoenix