360 Offers much, Much better protection than Avast ever has. Watch some youtube reviews. 360TS runs smooth and I think it's been proven that Avast can't compete with it. I'll not get into a debate, watch some Youtube videos. Didn't Cruelsister do a video on it too?In what respect? Certainly not lightness, which was @Glitch's main requirement. Panda and Bitdefender trounce it. The way I understood it he was also looking for a free solution which rules out a number of suggestions here.
@Glitch - considering your requirements I'm surprised Avast seems the best choice for you. Surely even Avira would be better.
@Evandro One of the main requirements was ease of use which rules out Comodo Internet Security.