2 keyloggers got past my paidfor AVG. The only reason I found them was I was playing around with a net sniffer and noticed outbound traffic on a scheduled basis . And, the only thing that detected them in an antivirus tool was Trend Housecall.... make of that what you will. I removed AVG and bought Trend
Now I have Kaspersky both because I heard good things about it, and it was free