i have used just about everyone in the Bay area since i bought my bike in 1991. Dudley, Dron, Golden Gate, Valejo etc. and i used a bunch of independents over the years as well.
I have also used Jim a few times. He is definately one of the best. He knows the bikes so well, allows you to watch and most importantly you can tell that he works on your bike like it is his - great attention to detail. For me, his location is a bit of a hassel but its worth the slight inconvenience. The only other independent shop that i really like is Kurt Taylor's custom design studio in Novato. The advantage to Kurt is that he paints and fabricates so if you need one stop shopping, they are great.
good luck
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