That's a very loaded question, as there are many very good builders out there. ATI, FTI, Chance, Ultimate, Select, Coan.....just to name a few. Several of them can also cut your's open, freshen it, and convert it to a turbo spline, and possibly for a lot less than a new one. My suggestion would be to call several and ask questions....Then go with who you feel the most comfortable.
Big thing to remember, is EVERYBODY will have a favorite builder that they've had good luck with, and someone else didn't for other reasons......So you're likely to get 50 different answers from 50 different people.....
We even have a VERY good builder here in Denver.....
Sorry this doesn't recommend someone for you, but it's a little more than that....