I work on my own when I know that I can do it. It comes down to how well do you trust that who worked on your bike. I know that if I screw up and wreck then it was my fault, but if the dude that turned wrenches on it did and screwed up then I don't think I would be too happy of a camper.

Working on your is alot better because if something happens while you are riding then you know somewhat of what is going to fix it.

Roadtoad