I've used them all ove the years at various times, avg, avast, comodo, mcafee, norton, live one care, essentials etc, etc. It's only a matter of time before one "brand" screws up or misses an infection. None of them are 100%, and they all have a laundry list of issues in their past. There's only so much they can do to help users from hurting themselves. I went to a site knowing there would a trojan on the other end and MSE picked it up immediately. Good enough for me.