A lot depends on what you consider "best." For instance, a program with a high detection rate may have other issues that make it less attractive in the long run. If you spend some time at the AV- Comparatives website, you can get a good idea of how various programs deal with different issues that may be important to you.
Too basic. I set it up for people who don't like messing around with their antivirus, but Avast! has better features, better UI, more options, more scan types, better detection, etc. It's really like the browser wars. There are a bazillion out there. Test them out and figure out which one suits you best.