Are $10 sngs holding my game back

[Focused]

I make a meagre living from smallish stakes sngs. My concern is that I have got stuck in a rut of playing tight-passive because it's actually been profitable for me. At lower stakes it seems the less 'moves' you make the better. I do push later in tournaments and that has been a successful strategy for me.
I just feel that my play has become stagnated and I would like to get more of a cutting edge to my game. Especially as I would like to step up in the class of game I play.
Are there any books you could recommend to sharpen up my game. I was thinking of Super System?? any thoughts. Or maybe certain threads on 2+2 to concentrate on. Thanks for any replies. [img]/images/graemlins/smile.gif[/img]