Hi collinsfarrah,
The better options or possibilities I’m aware of in and around the Danville area (subject to the quality/value guidelines here) are listed in the San Francisco/Oakland list in post #2 here.
Hopefully you’ve also had the chance to read the mattress shopping tutorial which includes all the basic information, steps, and guidelines that can help you make the best possible choice … and know how and why to avoid the worst ones.
Phoenix