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I used to recommend Avast but lately it’s become too much like Norton 360. This kind of package is for you if you don’t understand computers and thus need absolute and total coverage of every possible attack vector and vulnerability, plus handholding on every step of the way. At a heavy price in terms of reduced useability. If you are savvy enough to recognise a suspicious download or spam email when you see one, then a vanilla antivirus program is adequate protection, and won’t have the same performance hit.
That is the best answer I can give. 