Jonathan, I know what you mean about guitar shows. They tend to be wonderful if you like Strats, LPs, Teles, SGs, & 335s. Anything ungibson or unfender is seriously underrepresented. The one saving grace is that when you do occasionaly run into something interesting off the beaten path, you can often pick it up at a bargain price as the seller really doesn't know much about it and the other buyers aren't interested in it. The experience of walking through the show with money in my pocket that I'm ready, willing, and able to spend, and finding NOTHING to spend it on is indeed frustrating, but, alas, par for the course.
Bill, tgo