I was using Trend Micro Pccillin for quite a few years, had been hear from a few people that AVG free edition was very good. it still took a couple of years for me to change, i just wasn't too sure that a free anti virus program would be as good.

i've been using AVG for about 2 years now and i think it's great and just as good as Pccillin, maybe it doesn't have some of the bells and whistles but seems to be all that is needed, theres been no trouble with it at all.

i suppose its a little like Zen Cart in that it performs really well and is FREE...

But if they want you to sell only their software and now other then thats a little restrictive, probably the worst thing i've heard about AVG....