My pyrocat negs that are exposed and developed for azo are usually too constrasty for Kentona, sometimes work on EMAKS 2and have never worked on Slavich 2. All 3 are good papers, and yes, Kentona is probably the best of the 3 IMO. I've also tried Berrger's Art Contact 2 paper; it's also good, no longer made, but it's no azo. However, I got some from Berrger USA about 8 months ago, and they may still have some, but I'm not sure about that. I've just never seen any paper that has azo's long, but not flat, range, bold blacks that hold detail, and at the same time, have such a delicate look. I wish there was a comparable paper, but I just haven't seen it. Some of MAS's recent posts indicate Lodima may be ready this year.