TacticalGamer now has an Advanced-mode Versus server! Details below:
Name:
TacticalGamer.com - VS Advanced
IP:
75.125.97.195:27015
sv_search_key:
tgvsadv

We've been testing this the last few nights, and I personally like the game play a LOT better. The biggest difference is that the common infected and friendly fire both do a lot more damage, so you need to be a little tighter when on survivors. Special infected seem to do about the same damage - 10 points for a hunter swipe, etc.
As always, your feedback is appreciated!