Hey,

I don't know much more about the most popular anti-spyware, I heard about NAV but have not use it yet, I am also looking for a good anti-spyware for my system, I used an fake and rogue anti-spyware 'Adware Alert' of www.adwarealert.com, and This is too much, useless and worst

justin, you may want to try Malwarebytes RogueRemover to get rid of all traces of Adware Alert.

For real time protection against spyware, try Spybot S&D's TeaTimer or Windows Defender. Both work very well in the fight against malicious software.