The 6 40i Gran Coupe’s engine offers enough power and options to most drivers but we think that there’s a missing luxury touch in the trim. On the other hand, the 650i is offered with a V8 engine that propels 445 horses and 480 pound-feet of torque. So, our pick is the 650i for sure. We would have recommended the all-wheel-drive configured 650i xDrive only if there’s a need due to climatic conditions in your region.