Good to know about the cs. I heard Bulls are dropping Brose next year. If I could get my hands on a Bulls/Bosch fatty I'd be all over it.
I like Brose drives, I've sold a pile of them and not had any serious issues. One issue I encountered was after a lady's bike was stolen and recovered one of the headlight wires was shorted, it caused the motor to become nonfunctional. That was a bizarre troubleshoot.