Avria free is advertised as not having anti spyware protection. Somewhere I saw a comment regarding the tests at av-comparatives that the free version of Avira would do the same on their malware collection. I don't remember if this was from IBK or some other source. This leaves the question as to exactly what sort of spyware has been excluded. The second question would be which anti spyware applications would be directed at this segment of spyware. This is very different from asking which AS programs have the best detection. It is which AS programs are directed at this excluded segment, if anyone knows what it is. Part of the problem is it is difficult to define where the realm of virus ends and spyware begins.