What site are we talking about? I have played many sit n gos on Full Tilt, and mostly turbos. I agree with icemonkey9, most people just play very scared at the 2$ and 6$ level, they make very obvious moves and its fairly easy to beat most players. At 11$ and 20$ level the skill goes up, people get more aggressive but they still play ABC poker which can be exploited. I would say the biggest change in skill is when you hit the 55$+ hu, people know how to mix it up and are generally giving you hell, so it just becomes a "chess" match and just comes down to who can trap the other person.