Antivirus

Well I recently uninstalled a site licensed copy of Symantec Endpoint due to its complete disregard that my computer is in fact not a government supercomputer. By that I mean it would take immense resources (100-150MB) just to run real time protection. I tried to fix it but never seemed to get anywhere but to a hotter desktop - I mean the top of my desk getting hot from the computer. Anyhow, now that it's gone my computer stays cooler, everything else runs faster, and my harddrive doesn't doesn't keep me awake in the middle of the night spinning. I was looking around for a new substitute and thought I'd ask here if anyone knows any good antivirus programs? Right now I'm sampling one called Avast.