I stiched from AVG to AVAST a year ago. Much better IMO.
http://www.avast.com/eng/download-avast-home.html
And written by competent folks from Vaclav Kalus’s country-the Czech Republic!
I also went from AVG to Avast, and liked it better. About 6 months ago, I moved to Microsoft Security Essentials. It seems to be working just fine, and no annoying renewals.