At ~7BB, I'm push/fold against almost all opponents. Between 7BB and 10BB depends on my opponent, but I'm usually push/fold at <10BB.

One of the reasons why I might not be push/fold at 10BB is if villain'll let me limp and fold unimproved on the flop. Also, if villain raises to 3x BB at 10BBs and folds to a stop and go, I don't want to give him the idea that pushing's an option.