AMS will be just like stock but it has an adjustable height to create a shorter shift.
B&M removes a lot of the rubber/filler material which will create a more mechanical shift "feel."
Neither is going to solve any vibration, that just comes with the car. Both of these short shifters will amplify that vibration at different RPMs and maybe even make a slight noise. Before jumping over to a new shifter, think about changing out the shift knob first.
