I've always had my bike tuned at East Bay. It used to be called Hayward Kawi but they changed the name just about a year back. I've always been impressed with their work. The only problem is sometimes they're not very accurate on predicting when you'll get your bike back. Twice I've had to seriously get on them for taking their sweet time. Otherwise, though, they're a professional bunch and I've never had a problem with the actual work performed.