Hi asudixon,
Post #2 here (centered on Charlotte) along with post #2 here (centered on Hickory) include the better options in your area. You are fortunate to have a range of good options close to you :).
These are the types of manufacturers and outlets that are highly responsive to consumers, are much more open and transparent about the materials they use in their mattresses, and will help to educate you about how to make better choices that better fit your short and long term needs and preferences.
It also doesn’t hurt that the quality and value of their products is generally much better than anything you will find from major manufacturers or chain stores.
Hope this helps
Phoenix