Taza discs are not my favorite. That said, this was a nice bar:
I think the thickness may have helped a little, but the fact that it was 87% (as opposed to 70%) helped a lot. Took away some of the sweetness, and the richer flavor better complemented the stone ground texture.
Bottom Line: Those Taza discs are easy to find, but if you can find one of their high percentage bars, I definitely recommend those instead.