I already gave Bren a shout out in this thread, but just to state how good I think he is I just came back from having my car tuned by him an hour ago. An 04 WRX, nothing stock, not an easy tune. And my drive home was in a car like I've never driven before, everything about it is perfect. Quiet as hell, pulls like mad, boosting perfectly. I'm telling you this guy knows his stuff yet he is down to earth and helpful.
I realize everyone has their "favorite" but if you are in the market for a tuner Bren should be at the top of your list. He is nothing short of a genius when it comes to tuning. Call him.