I've had mine since the end of February. No issues except an initial sling adjustment. This is by far my favorite pin. It is so addictive. People of all skill levels enjoy it when they come over. I'm still waiting to put in a rating as I want to be fair, but I can say that after having quite a bit of time on v3.0 now, it's going to be a pretty high rating.
My only complaint... I would like to see a complete document of the rules. I have pieced together stuff from here and the JJP forum, but would like to see something official from JJP. The 'flowchart' on the JJP forum is pretty good, but it doesn't explain how to accomplish some of the objectives.