ORIGINAL: BigTb17
I was told by a Castle Rep at the Toledo RC show that the Mamba Micro Pro was the same controller as the Sidewinder, but because of the case and heatsink it could handle more amperage.
I don't have any personal experience with either, but that is what I was told.
The problem is with that, is the case is smaller (in length, in width it slightly longer) than the sidewinder. So it cant be the same circuit board.