I have the SS PCS 3HP, with the Bies fence. It's my first (and probably last) big boy table saw, my two previous saws were a crappy craftsman benchtop, and then al old craftsman contractors saw.
So, from that perspective the Bies fence is unbelievable. I've played with the idea of the incra system, but, since I have a routher table on the extension wing, it sounds like more trouble than it's worth. I also saw the VSCT one, and I was intrigued, but I think it's one of those things that sounds really good in theory, but you end up not using it the way you thought.
I did see some place, that sold some aluminum extrusions that attach to the Bies fence instead of the lamitated sides it comes with, looked like an interesting alternative.