Should I install Microsoft Security Essentials?

I would read this.

Ars is pretty good about doing reviews.

I’d let some other people try it out for a while and see what happens. Stick with what you are using that are tried and tested.

I would stick with what you have for now. Maybe look into it in a few months when more people have started using it and see what the general consensus is.

I’m in the same situation as you are. I’m using AVG Free and I’m wondering if I should replace it with this Microsoft software.

I think I’ll stick with what I have because AVG Tech is a company existing only for making security software while Microsoft makes a whole range of software.