Welcome to R2R from a fellow Coloradoan! I'm up north in Denver though.
I would recommend Reefkoi Corals. He has a great selection of corals and reasonable prices. Also check out the local reef club SCMAS (Southern Colorado Marine Aquarist Society). They usually have a pretty good coral show with many vendors (several come down from Denver) but with Covid that might not be happening this year.
If you decide to come up north you have to check out Aquatic Art. They are only open to the public on Friday and Saturday but they are one of the best reef stores in Colorado.