Define weak.I like all of them but Trend Micro, it is weaker than Kaspersky, but my friend said it's good. I'll wait and consider the voting result.
If you enjoy Avast the most, I should have a 1 year license file for Avast IS on my drive. Should have at least 10 months or so left. I doubt I'll use it. Got it via giveaway. Gave away my Avast AV Pro giveaway license few months ago. Worked fine for him. (To avoid confusion - it was not MT giveaway - one should not sign on for limited giveaways if you aren't going to use it). Just an offer to save you money (only ask you keep my email on file to yourself).I've used some antivirus engines as Panda, Avira, Avast, AVG, KIS, BIS, BTS, ESET, Ad-aware. Of course, none of them is perfect, but i can say, i like Avast most.