Ok, I wish I could get some money from this recommondation, but I can’t.
Not all anti-virus programs are the same. In the past I found the big names bog down my system and get their tentacles too wrapped around my registry!
For the past 3 years I’ve been using NOD32 an all my computers (even my mac/windows). It’s quality and lightweight. It doesn’t take forever to boot up or take up too much room on my harddrive.