The'yre very close in sound, the "grey" ones tend to have a mellower tone.
The current MKII's, however, are brighter sounding than either of those.
Sometimes you can score one of the old grey one's that had a better clip than most all of the other models because it screwed on instead of slipping on.
Yes I know, but I want to know what the difference is between the black and the beige mics other than colour.
I mean black ones can also be from the older series MD421's right??