I think there is only some agreement on how sharp different blades are, relative to each other. Smoothness is an entirely different story. Edit: oh no, another resurrected thread ...
I like my Treet blades. But there is sure a difference, as you go up or down the sharpness spectrum. I find that as much as I like the Treet, they don't like the merkur futur. But they love the EJ 89. So I try to mix it up with what the blades like.