in theory, it will run any of them. in reality, it runs mod motors much better. high turn motors (10.5+) can have some issues getting off the line, and the tall gearing required for those doesnt help any. most people say that 8.5's and below generally work fine.

Castle is working on a new 1/10 esc that will have a sensor port, and thus be able to run any roar legal motor with no issues whatsoever. dont ask me when its coming out, because i have no idea at this point. hopefully it should be out by next year by the time your racing starts