I've had a bunch of PF knives now. I can confirm that they are decent. They seem to get one of the better heat treatments on Chinese D2. Actions are pretty good. They've also got some fun handle materials available on some models. My only complaint is that the scales can sometimes have crisp edges, especially on models with nested liners. This doesn't bother everyone but I'll usually put in the few minutes of filing/sanding it takes to smooth up those edges.
BTW, the PF 818 is still one of my favorite designs. It is a good EDC knife, and much better after that few minutes of filing/sanding. Since they've recently been branching out with other steels, I've been bugging them to do an 818 in 14C28N.