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I had a real IBM Model M for over 10 years before it finally gave up the ghost, and it was already at least 20 years old when I bought it. From there, I've had THREE of the Unicomp Model Ms mentioned in the article. Their quality is crap. All three crapped out just after the warranty was up. I finally found a NOS real IBM Model M on ebay, and gladly shelled out over $100 for it plus a USB cable made for Model M keyboards. This one, being essentially brand new, will likely be useful long after I'm dead and buried. No one has ever come close to the build quality and longevity of the old IBM/Lexmark Model Ms.