What's the most KC Pro-like Warlock?
The PW's?
Most of my Warlocks are older but I have one recent Firm which oddly is also white; I'd second that on being closer to the feel of KC Pro than PW.I found white Firm's to be very KC-like. They have the same slick grippiness, whereas PW's are more powdery/ chalky. Similar stiffness.
PW isn't all that consistent (Gasp! Inconsistent Gateway plastic? Say it isn't so!) from what I've seen and I've been fairly underwhelmed with the PW discs I have. I'm a pretty big fan of regular 'ol Sure Grip.