I've got a bunch of mouthpieces, and it's never easy to find "the perfect one" I'm still searching for it, my teacher is still searching for his, etc. I know a fellow who has 20,000++ mouthpieces in his basement which is also a fantastic trumpet shope near Rochester. Mouthpiece selection is all personal preference, and involves trial and error, and lots of time. As you're developing as a player, gear isn't a huge part, many mouthpieces won't do anything special for you unless you have the chops to find the difference and utilize it. The greatest gear in the world won't make you the greatest player, practice does that. I'd reccomend trying the local store or trying out your fellow section-mates mpcs and see if you find anything you like and go from there. Good Luck!