I'm looking at a Unisys Model M copy on ebay, model # PCK-101-KBD. The buyer is clueless as to what clicky means, and for the life of me I couldn't find any info online about the keyboard. One person in a message board said that it isn't buckling spring, and that's about all I've found. Does anyone know if Unisys produced anything worthwhile? I really like the look of this model, especially the text on the buttons...and it's cheap. It's ps2 w/a removable cord, and basically looks like an M.