The virus.gr site has published results of tests made at the end of August, using 147,184 virus samples. Kaspersky takes the top two slots, since AOL uses Kaspersky, ahead of F-Secure. Bear in mind that some programs score badly because they are not actually virus checkers: Trojan Hunter, for example.
You might wonder why you are paying for Norton when AVG seems to do as good a job, and Avast is better than both. (AVG has better heuristics, as the lower table shows.)
