I have the professional version on 10 PC and Windows Home Server also and I am more than satisfy.

Footprint is very low and very good protection is offered.

None of my kids PC has been infected and by the windows home server I am aware when they have downloaded a infected files on their computer in some case it is not an infected i.e. they are doing something not very legal to get their games working i.e. consoles games on a pc etc. but at least I know what they are doing and because of that nice monitor feature I already restored their PC to stable state and cleaned their PC with avast, so for me this is a very good anti-virus to own.

Not been disappointed of using it and very please from their support also.

This product has been perfect for my family and saved me a lot of aggravation and money also compare to other solution.