AV-Comparatives is an independent, well-known and well respected testing organization in the AV/Anti-Malware field. They recently published two reports and one meta-report:
Go read them if you have questions like "which product is the best for me?". Thank you Andreas for providing a great and impartial service.
PS. One surprising thing for me was the high detection rates in the dynamic test - upward of 90%. This indicates that either I'm too much of a cynic or that their crawler system still has room to improve - I would expect AV products to be around 60-70% effective against new threats.