My company's IS guru's have just voted with their feet and ordered a transfer from McAfee to Norton.
The latter has the better research DB for general Virus info certainly.
On the home PC, I went for a freebee - probably because I've never heard of a freebee from CA - but its good and it catches things as fast as the others - at least so far.
InoculateIT Personal Edition
There are some others also
try here under Downloads (top right).