After years of using Norton Security products, I'm getting sick of Norton resource hogging my PC's along with loads of other little problems and the high price tag for yearly updates and upgrades. I'm thinking of installing ZoneAlarm personal firewall (free edition) instead. But I can't decide on which Antivirus software to use along side it. I've herd loads of good things about Avast! and AVG, so I'm going to use either one of those, but can't decide which. What are your views on each and which do you recommend?