Alpine. He didn't actually do the work, but he sent it out to somebody he knew who was qualified as such. I'm taking him at his word because a) he's got a pretty decent reputation and b) I couldn't find anything negative about the service on the internets. Spokane is only about 3 hours north of me, but with these gas prices I figured I was better off just having him ship it.Yes, I've had Alpine work on some of my older lenses, and have been happy. The owner is a very pleasant guy.
Also, I'm paying for the original repair work, plus my botched repair job (stripped thread and one other electronic part that needed replacing).
Camera Corral in Cour d' Alene does a good job as well. However, Canon's flat rate repair price for the 50 1.4 is hard to beat, and I get a discount thru CPS.