I agree Heuberger is crap, but if you ever go back ask for Mark McClanahahn (sp). He's an old, retired Marine that's worked there for ever. I've bought every VW I've ever owned from him. Last experiece, besides a $50 Xmas gift, was buying the 05 GTI. He knocked 5g's off the sticker price immediately, gave me $13k for my recently rearended 03' Passat 1.8 (fixed but still wrecked at one time and he knew it), then proceeded to give me $3.5K in VW loyalty discount. With what I owed on the Passat minus the trade value I walked with my brand new 05' for $12 and some change ($194/month).
Mark's a no nosense, he won't haggle but will get you as low as possible. If he can't get you what you want for what you want, he'll tell you straight up and tell you to call him next time you're looking for something!