To be honest, I've had McAfee VirusScan before. I think it's not very good, for a slow PC like mine. When its being updated, it takes up alot of my memory usage and everything. Now, that I have switched to AVG AntiVirus, my PC has been running smoothly, and all the malware on my PC has been removed, it's like a dream! So, I would recommend AVG AntiVirus for all of you... it also has a free edition you can use, but it only has AVG AntiVirus, if you get AVG Pro, it will come with everything you need to stay protected, even online. The free edition has no trial, so you can use over and over again... however, AVG Pro requires a license, mine expires this December lol.