My hacker is running in an offroader. It's a Duratrax Evader ST (the super flexible plastic version) so I'm pumping all the power of the 6 turn BL through the two rear wheels.
I love it. I never want to run anything else. Not too difficult to control, and good runtimes.
I just need to gear it down just slightly to remove a touch of heat off it, even though I've never had it shit down from getting too hot, without running any fans or anything.