The best thing about this is its simple yet fully functional GUI, which I like very much. It's not so simple as some "advanced" antivirus programs are but it's easy enough for anyone with average knowledge of computers to use. It has a feature to keep track of what files are opened from where, which makes finding malware or other malicious apps easier. Sometimes it gets into loops that make it freeze up. This happens rarely though. For me, it's good because I can protect my PC at all times without having to worry about viruses. The only thing you should consider before buying this product is if you plan to have multiple users using your computer (we do, and I don't want them to be worried about viruses). I've had no problems from it whatsoever. We use it when we're working on computers in public places.