IBM KB-7953 and KB-9910

[novice1]

I have been using a KB-7953 for years and like it.  I want to get another one, but in reading these forums the KB-9910 gets some positive comments.  What is the difference between them? Thanks

[fohat.digs]

I think the 9910 is a later model. My experience is that the QC goes down when they started making them in China.

The KB8923 is a heftier and more solid board, although pretty much the same. I think it is a little smoother.

And it is a clean rectangle in shape.