Just upgraded to brushless. WOW! This was the best $$ I've spent in a while. We drive in really dusty terrain and the brushed was just a pain.
http://www.hobbyking.com/hobbyking/s...dProduct=20995
Very easy to mod. Had to drill new holes in the motor mount (for 2 x 2x6mm screws) and shaved the chassis rib behind the motor due to a little bit of extra motor length vs. the stock motor size. Take care where to drill the motor mount screw holes so that there is clearance to adjust the motor laterally for gear mesh. Took 20 minutes to do the mods.
Would suggest splurging for the programming card.
Round trip for ESC/motor/programming card/shipping = $46.10
Will be converting to 3S lipo as soon as Ifind a batter that fits the tray.