This is the first hobby-grade RC car I ever bought, and still the only RTR I bought new. Upgrades are limited to steel tranny gears, aluminum shocks, T-bone bumpers and a Novatech Assassin brushless kit, unless you count the two different sets of CVDs I bought that didn't work worth shit. Tires are proline pins in the back and dirt hawgs up front.
Bonus: My EXB with comically large badlands on the back. Had to gear it way down to keep temps acceptable. Did wonders for ground clearance though.