I’ve had no big issues so far with the new pfSense version, although it’s still a beta. I especially like the OpenVPN and Dashboard improvements, and the LDAP auth support. I still have to experiment with the Layer 7 QOS / Traffic Shape features.

Recently I also bought the official book “pfSense: The Definitive guide to the Open Source Firewall and Router Distribution“. I can recommend it if you don’t want to spend too much time searching the web for some common deployments/features.
I you want to dig a bit deeper into the inner workings of the pf firewall, the “Book of PF” is another one I can recommend (No Starch Press).

The pfSense 2.0 beta by PieterB's blog, unless otherwise expressly stated, is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 2.0 Belgium License.