I'm thinking that it'll be next fall before we have the next DFW TrumpetFest. Sorry, that's so far away, but annually seems about right for now.
Here are some suggestions for now:
Call Roger Holmes at Brook Mays on LBJ. He has an exceptional selection of Bachs (not all 37s, he's got LRs, 43s, etc.), V-One, Yamaha and a few other odditities. Tell him that I sent you and don't work with anyone else there. (This is NOT because I get a kickback or something like that, BUT because BM is full of idiots when you get beyond Roger).
David Leonnig at
http://www.airstreammusic.com/ has a great selection of Stomvi and Marcinkiewicz as well as a great selection of GR and Marcinkiewicz mpcs. They're talking about bringing in Chicago Brassworks and one or two other brands.
Sometimes we have some informal mini-trumpetfest at homes and similar venues. Send me your email address if you'd like to be added to my email list "DFW Trumpeter" which I put out every two or three months with various trumpet news.
Dave