So for a long time I used Comodo, including Defense+ with ThreatFire (two Hips) with no problems. Then I decided Comodo was to confusing and went with Online Armor Free, also with TF and no problems. Tried PCTools firewall, no problems but for a good six months or more it has been Comodo firewall only (no D+) and TF. This combo is unbelievably light and of course no conflicts. Now I have this free license for the commercial OA and am trying to decide whether I should just dump Comodo and TF and use it. Admittedly, I'm not really sure TF, at the default settings, is offering that much more protection. NOD32 has always been my AV and I'm behind a router. My obsessive side is wasting time even thinking about this since I never go to the dark side and use Sandboxie!