Mine arrived today. The model M is in a great condition and it has mostly in caps which is very good for me as a colemak typist
Cable is missing so I will do a usb modification soon, have to get some tools first because this is build like a brick
The cherry one has awesome caps. Condition is good to after cleaning. Sadly there is a brick at one stabilizer hole, probably my fault, maybe not due to this really old wobbly PCBs. Another stabilizer was out of position too. I will do a din => usb conversion and look how much is working and then I am probably going to fix the damage lines.
The dell keyboard with black Alps has become very yellow with the time. Apart from that it is in good condition too. Alps mount is by far the worst mount for switching keycaps
I haven't dont big typing tests yet, more to follow