Brushless system/esc/motor advice?

[Benzio]

Unsure if this is in the right section so i apologise if it is.

Right well i'm looking to upgrade my brushless running gear and get some 'boost'. What sort of systems/esc's/motors would you recomend? I've heard of the Hobbywing bargain ESC which looks good for the cost but having seen two of them in action they seemed to have problems and drain the lipo's superly quick.

All help appreciated!