'05 R 1200 Gs
I use a Garmin 276c and use the speedo readout while never consulting the sweep needle gauge. This unit also switches background color at night and is an excellent visual reference. Still consult the tach but mostly rev by ear.It's not a simple matter of conventional (needle) Speedometer and Tachometers being replaced by a digital TFT, it's all the other features and functions that go long withe the new instrument display.
I do prefer the sweep of the needle when it comes to the Tach but I like a digital reading on the speed.