Two of my machines are still on AVG, I changed 3 others (including the 'ONE') to Avast!. Avast seems to be less of a drain on the system, and my (4 yo) son likes it on his computer, since it uses a voice program to tell you it's been updated. :lol: I'll probably switch the other 2 machines over eventually, AVG free gets hung up on updating alot, and it is resource heavy when scanning.