My Rally got upgraded with a brushless system as well (plus a center diff instead of their "Stall Clutch"), and it really is a fun car.
I'm piece by piece building a Rustler 4x4, and it's getting a few changes from the start (like that center diff).
Welcome,
I'm one of those who isn't unlucky enough to be disappointed in the Traxxas ESC/Motor setups. I have several models with the factory combos and no issues with any of them yet. Likewise, I have used the Spektrum ESC/Motors in a couple more and they haven't failed me yet either.
I do...