I've gone through a lot of keyboards. IBM, Unicomp, Sun Type 4 and 5, Apple ALPS with ADB converter, a bunch with various Cherry switches including Filco, Leupold, etc.
I had two Matias keyboards, the tactile pro (I think original) and the 2, and while the switches are okay neither held up to daily use with keys that wobbled, cracked plastic, and both suffered from keybounce and had poor NKRO (enough that I noticed it in Emacs). No thanks.
I settled on a KUL tenkeyless board with Cherry Green key switches[1] which feel similar to buckling spring and it takes up less deskspace. The caps have worn slick and the printing nearly gone but the feel is still good.