I've swapped from AVG to Avast in the past 2 weeks after AVG let me down
Seems really good to me, at least it found the viruses AVG missed
As theblueraja said, the updates actually work, and it updates when you connect, not at a set time.
I like the email checker as well, works with Outlook Express and the full Outlook, and even with that awful IncrediMail that my Mum insists on using!!!!