Comodo's concept is not based on signatures, and it is not intended for novice users. If you know what you are doing it offers better protection than the majority of the antivirus programs that use signatures (just my opinion).
P.S. you can use custom install and deselect those geek buddy and browser stuff, you complain about
P.S. you can use custom install and deselect those geek buddy and browser stuff, you complain about