Zleepy,
When you look at the repair manual you'll quickly discover that there is virtually no difference in the operation between the 2000, 2100 or 3000's keys. They are mechanically the same. But, for most folks, it don't make a damned bit of difference. I have replaced keypads in the 2000, 2100, 5700 and 740 for lots of folks who pound on their keyboard keys as if they were Jerry Lee Lewis. They were never made for that, and from what I hear, neither were regular piano keys. Ask anyone in the repair biz and they'll tell you the same thing.
Gary
_________________________
PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!
K+E=W (Knowledge Plus Experience = Wisdom.)