Panalure works the best. I use it at work occasionally--admittedly with a roller transport processor which makes usng it pretty easy since it's like a color paper & needs to be handled in the dark....
at any rate, it came in 3 grades as mentioned above--low, medium & high. I think medium is all that's left now, although I have used all 3 grades and still have quite a bit lying around. It's sorta funky stuff to use, but works best with a colorhead if you have one. You can shift the tone separation around with a filter pack, and you can also punch about a half grade of contrast higher with cyan filtration--although sometimes you pick up some grain in the image this way as well. If you need to lower contrast, the only way to do it is through flashing the paper or possibly through development. The final image tone can be sorta weird sometimes and has a smoothness, for lack of a better word, that a reg b&w neg doesn't have--although occasionally certain types of negs will end up looking mushy. All in all--it's the only paper that really works good with a color neg because it's panchromatic.
Hope this helps.