I've been playing 10 dollar sit n go's (while my bankroll is transferred to party network) on poker stars. I don't have a huge sample size but i'm confident that i'm beating the 10 dollar sit n gos. I've got the bankroll (from ring games) to supposedly play $100 sit and gos, but i don't want to play there, and i also don't think i'm good enough. So at what buyin do the players get significantly better than the 10 dollar buyin sit and goes.