Many years ago, I bought an IBM Model M--Airlines model (1393464) which I still use to this day. One day I decided to clean it, and as a result, it started acting quirky. Good thing was it was just temporary, and after it dried out it was fine. But that led me to Unicomp, about 1999 or so. I got one there, but deal is, it just seems to me that their boards are not the same as the original ones. Not quite the same feel, and a little louder with a different click/clack feel. I only got it as a backup, but have really never used it. It just doesn't feel the same as my Model M, or the one I just got, a SSK off Ebay, which I paid alot for but will never sell, so who cares. LOL