I did the upgrade to my EX21. My saw was made in Canada prior to them being made in China/Taiwan. I think it was a very good upgrade. Probably not necessary but it did seem to take a bit of the vibration out of my saw. Not that it had that much. But, with that said, I was going to do the same upgrade to my Dewalt but then I sold it when I bought my Hawk. If it were up to me, it's one of the first things I'd do to a saw that accommodates the Pegas clamps. If you are truly thinking about that type of saw, save some money and just buy the Pegas saw up front. It has the $100 clamps on it. I have no personal experience other than the clamps and the blades but my thoughts are that they are a top-notch company and might just have a bit better quality control over their saws at the factory in Taiwan. Just my opinion. For what it's worth.