|Having two AntiVirus programs running at the same time is not desirable. They create conflicts with each other, and you will end up with much less protection than expected.|
AVG has been around for quite a while, but, it's had a good share of problems lately,
like failing to update its virus library, and not working correctly with other programs such as spyware removers and certain browsers. It would not be my choice.
Would keep Microsoft Security Essentials.