I use Norton because it's free with Comcast. I don't notice must difference with the computers performance when Norton is installed. It does take a little longer to start, but only a few more seconds. Not a big deal, by my standards. 374 views, huh. That's a lot of lookers. Don't worry once we make some comments, some heavy weights will come in and drop some stuff on us that will make our heads spin! LOL With some of the other antivirus programs, I've tested. I've found, they are more apt to conflict with other programs. And don't seem to protect as well. But, that's only been my experience, not written in stone. Don't get me started about reviews. Ever heard of a smake oil salesman. I do my own testing, thank you. A lot of that stuff out there is freeware, or shareware. So, why pay for anything.