I've been eating Scharfen-Berger baking chocolate lately. It's labeled as 99% It's annoying to eat though, because it's not packaged for eating, so the pieces are huge and pieces flake off when you bite into it.
GF won't touch it. We bought a bunch of the Green & Black's 85 bars, which we both like. I find the texture and flavor to be much better than the Lindt 90, but I hear the 99 is on another level still (and priced accordingly).