I have been using Comodo for some time now. Intermittently, I've loaded one of the other main rival free AVs, but have settled back here again. Once configured, it is unobtrusive and works without fuss. Occasionally, a flag will appear, asking whether to allowblock certain actions, which just needs a little attention and is not a problem. Most of these flags are just procedure and don't indicate anything malicious.
Virus detection, etc: I have found Comodo to be the most vigilant and thorough solution to the prevention and deletion of malicious items. I ran a few tests against its main rivals, using AV testing downloads. Whilst Avira and Avast eventually spotted the fake malicious file ( after I'd opened it, or when attempting to open it ), Comodo spotted it significantly quicker, before I'd gone near it, and immediately flagged a warning. This superior vigilance was impressive and made the others look sleepy.
Getting rid of Trojans, viruses etc is very simple, a couple of clicks and it's gone. There are no half-hearted messages saying ' cannot entirely delete the file cannot be deleted '. It's very irritating to have located a virus or trojan only to find your AV can't dispose of it. This problem doesn't happen with Comodo, or at least hasn't happened to me.
I would wholly recommend this security suite. I could buy a big-name AV again, but what for? This software, oddly, doesn't get rated by some reviews/AV tests. There is no substitute for personal experience.
License: Free Details...