F-list help: Anti-virus Program?

Dear Flist,

I'm in the market for a new anti-virus protection program. I've tried several over the years: Spyware Doctor, Kaspersky, McAfee, and Norton. All of them seemed to do alright for a few months, but after a while they stopped working as well. So, I was wondering what you guys would rec? Maybe all of you/some of you know some good anti-virus programs that I've over looked. I've heard good things about webroot, but it seems costly.


Any help would be awesome.


Thanks.


EDIT: Thanks for all the suggestions guys. I went to the store and all they had was Norton, McAfee, and Kaspersky. I took Kaspersky, as it's meant to be one of the best.