Sophos gets stuff that ESET has left behind. SEP was good the last time I used it (it's norton without the bloat.... for enterprises) I never use consumer grade AV because it's bloated. I get enterprise versions that are low profile and are basically an icon on the system tray and a tiny menu/window. Now gaudy flashy interfaces to bog it down and no BS. Sophos is what I'm runnin and it's taking up only 65MB RAM and 86MB commit charge. I used to run Avast and it would shoot up to 250MB RAM and 450MB commit charge. kaspersky was the worst like 532MB RAM and 650MB Commit charge!!!! as a matter of fact that one was the most bloated I've ever used. and I tried everything to control and and nothing. and the ent. ver. didn't even work on server 2008 it kept having runtime errors!