We are speccing a Bakfiets Cargo Trike, and it comes with two engine options. One is a Shimano Steps 6100 and the other one is a Bafang M400. On paper the Bafang seems like the logic choice based on the price difference. They are both 250 W. The Bafang is 80 NM and the Shimano is 50-60 NM. The...