Yeah, get the black can, it is the cheapest and hardest and best bang for the buck. Get some pinions also (22T, 23T not sure I have a TA05 and TT01, take a look at the manual), to mess a little with gear ratio's. The black can works very well if properly geared...
The Blue Armada: Tamiya TRF415MSXX, Tamiya TA05MS, Tamiya/Xenon TA05
Novak Brushless, Orion/Peak LiPo batteries, 5-cell
Sanwa M11 DSSS, KO Propo Servos