At a competitive price, for professional use they are not cut more easily than the heart of rio mare in oil. Not that you will easily find something good since neither the dewalt can withstand nor the chinese-no name (I have brought various from abroad).
However, if you go to place them in a remote place from shops make sure you have many with you because you WILL find yourself unpleasantly surprised.
I note that the pz3 are equally mediocre with the pz2, as well as the fact that I used them with Makita and DeWalt. In Milwaukee with even greater torque I wouldn't use them even for 4/35.