I've seen a great amount of positive feedback for AppGuard lately on how light, and strong it is. I'm all for light, and effective security software, but does AppGuard do anything that my currently installed COMODO Firewall does not? I wouldn't want to spend the $39.95 if COMODO already does what AppGuard would do in its place. I would hate for this to turn into an A vs. B thread, so rather than ask "Which is better?" I ask only one thing. Does AppGuard possess any functionality that COMODO Firewall w/D+ doesn't already have?