PCCs are a hoot. I've had a couple and shot quite a few more. They're notoriously unreliable. The only model that has an across-the-board reputation for reliability is the JP, which I have now and should have just paid the money for to begin with. A few friends have MPXs that they trust, now that they've worked out the kinks and proved them reliable.
Yep........my MPX is good-to-go and one of the most 'fun' guns in the house.