Which of these anti-spywares would you rate as the Best?

Spybot Search & Destroy is the best one out of all of them. I tried them all before. I must admit, Spybot saved my old computer from a spyware that was in my computer for so many months that I couldn't find and remove it. It was then when I decided to try Spybot, which was when it found the spyware and got rid of it for me. (Made me happy). I became convinced that it was great! Until it stopped working on me one day... But now I have a new computer :).