I had a strange bug in X1 that came out of nowhere. If I inserted a new track, the PC was blank, EQ and all. I saved this blank PC as a PC Preset, and could load it in to any track.
Now, three things:
1) I didn't want this blank PC, it just appeared, and never left.
2) It may just be a graphic error, except it offered me Quad EQ as an option to insert, which it didn't before.
3) I've not tried using the Preset in X2.
Personally, I like the PC EQ. It was originally put in X1 to emulate a hardware EQ in a large format console, AFAIK, so the lack of large GUI never worried me. IIRC, many of the desk EQs I've seen over the years didn't even have numbers on some of the knobs, let alone graphs. The engineer just used his ears and experience.
If I want a graph, etc., I use another EQ, but for most work, I use the Quad Curve.