Computer Security

[Joe]

What should I be running to prevent mimics, worms, ads, intrusions and viruses?

Basically I want to know what Joe or any other IT guy runs on their PC to keep from getting infected.

Are the best programs free?

Is there anything that is pay program that is heads and tails above the free ones that I should definite LEE get?

I use AVG Free at home and Sophos on all of my client's computers.

If you pay the $25 for Malwarebytes that will keep you safe. The free version does not prevent, it only removes on demand.

Do you ever see anyone use Kaspersky? What is your opinion on that?

I've always read good things, but have never known anyone that uses it.