The keyboard I am using here is a Northgate Omnikey/102 purchased new around
1991 for $75 mailorder from California, still works and has not needed a key
replaced so it was worth the money.
I like the Omnikey Ultra T I use on my Amiga 2000, it was $10 or so plus
shipping and I picked it up here from a list member (thank you again). Its
nice to be able to flip a jumper and use the same keyboard on a Tandy,
Amiga, XT, AT, etc (ok with a few keys moved around in the case of the
Amiga).
For my old Macs I use the Apple ADB extended keyboards or a Appledesign
keyboard if I have to.
Since I use a few KVMs I tend to get away with only a needing a few good
keyboards.