latecomer on this thread but another +1 to boston and cambridge bikes. every now and then i'm at boston just bc i'm bored at work. good peoples. cambridge is usually a bit more busy but the guys there are friendly if you're level headed. most of the parts for my most recent build were bought there. community is another nice one, but doesn't carry a lot of the stuff i need. the guy at back bay actually offered me a job, oh god. i'm debating whether i should take it, i wouldn't mind the exp but they are hardcore into selling up, and thats not how i roll. plus its not that great of a shop, but a good last resort if you need accessories and ****.