I use the free Avast AV and it works well for me. Every year, you'll get reminded to renew and offered the upgrade. I just stay with the free version!
This is my computer combo for scumware. It works great, whatever malwarebytes doesn't get search and destory does and vice versa.
I’m using Norton Internet Security 2010 with Window7 64bit. Everything seems to run well and the PC is virus free. Thanks Brian
I use kaspersky in my Computer . It is an Internet Security and in my laptop I am using Avast free edition. Both systems working fine.
I also use Avast. And F-secures online scanner for a second opinion. (Plus the old classic Spybot Search & Destroy...)
I use AVG for general use. Malwarebytes as a backup and to find and remove the worst offenders. Also, Comodo Firewall. All of which are free.
I use Kaspersky Internet Security 2010. I think this is one of the best. If you need to choose take a look at this : http://anti-virus-software-review.toptenreviews.com/
the best antivirus is yourself. if u won't navigate on warez and hacking sites, download rubbish from net, a simple free antivirus would do the job. else, there's no protection for you.