QuietStormX 5pts The BMW M5 and M6 come standard with the 6spd manual. the slush box is optional for lazy riders who can't do more than one thing driving. With a real manual you learn the automobile. How it feels and sounds. You can't not pay attention also. Your hand are busy and you gain cordination with the clutch and the stick and more control of your rides. I like the choice of a real manual trans.