Unicomp model M is not the same as the original model M the typing feel is considerably different. I purchased one and ended up returning it since it was so different than the model M feel I was expecting
The build quality is also sadly lacking - I’ve tried two or three Unicomps over the years and they all die eventually. The genuine model m keep trucking along.
I've been using two Unicomps since 2008, one for the office and one at home. They haven't died yet. I've only had the replace the rubber trackpoint nub on one of them.
Supposedly, the build quality since they retooled last year is even better.