As far as I can tell, other then the speed meter on the CA, these are the same thing. Please, someone help me out here. Is there any reason I should shell out the extra $100+ (international shipping) for the CA?
One key difference is that the CA uses a remote shunt (sensor), so you don't have to run big wires from battery-display-motor controller. Not only are the wires bulky, but the extra length means more resistive loss.