As a professional consultant, my clients always look to me for guidance regarding which software programs to use. I’d say 90% of my new clients use Symantec/McAfee programs because:
- Their computer/server came pre-installed with it.
- Name recognition – they’ve never heard of any of the other A-V manufacturers
- Their previous network support staff recommended it, and they’ve never considered other options
I make my recommendations based upon scientific testing methodologies that must be reproducible. One site I visit the most is av-comparatives.org which releases quarterly reports detailing how some of the most popular anti-malware products fare. You can check out the results overview or view the comparison details (they discourage linking to their site’s subpages).