Per your comment on the 3279: Did you ever use any of the original 3279 terminals with the "chicklet" keyboards? We had serial numbers 6, 10 and 12, and the keyboards were horrible; there was ample space between the keys (both vertically and horizontally) for you to be able to miss a key entirely. The intent was to allow overlays to be put over the keyboard describing additional functions and / or layouts, but it was abysmal to type on.
I've seen them, but managed to avoid having to use one. The mod 2 and 3 (particularly the 3G) 3279s are what I consider to be perfect. We also had some of the 3290 terminals, with the 160 column screens, which could be split into four 80 column virtual screens. These were great, other than coming only in orange. We had them as Operator consoles, allowing them to monitor four screens at a time, and blow up one screen when something deemed important was going on there. Still have one...8-) I need to find the microcode support for it for my last functioning 3174, though.
