Once we had four Media 100 Suites set up, nobody touched the 1" A-B roll suite ever again. CMX edit controller, Grass Valley 100 switcher, Ampex ADO, and an I-can't-remember-the-brand-but-it-wasn't-Chyron character generator.
I remember the Chyron all too well.
Just about all the front line switchers were Abekas. There were some Grass Valleys (I think) in some of the distance learning rooms.
CMX seemed more like 8 hours of solitary confinement in a cold electronics room with the constant hum of the ventilation.