NYC: Big thanks to Canal Metro Bikes
Not sure if this is the right place for this, but I'd like to highly recommend the Metrobikes Canal st shop. They've done an excellent job with everything I've ever given them, no matter how atypical or tricky, and at good rates. I've also always gotten the bike back exactly when they said they would be finished with it - even in the busy season! They're also open seven days a week. Thanks a lot to the staff there. For full disclosure, I'm just a satisfied customer who has used a lot of shops across the city and I have had enough inconsistent experiences elsewhere to motivate me to want to share news of a good shop now that I've found one.