I’ve been running the Pro on a P800 as well but printing with Canson Baryta. Canson has replaced this with the Baryta Photographique II and their Baryta Prestige. I haven’t tried either as of yet so I can’t give an opinion as I still have a supply of the originalr baryta but it too has been replaced. I have tried their new Baryta Phottographique Matt however and find the matt surface interesting but a VERY cool tone paper. While I do like the tones on the baryta that I have, I am still fond of their Platine.
I was told that Hahne had to discontinue the paper, because of a certain chemical that was used in the manufacture. Sounds like an issue with EU regulations. I wonder if this will affect other types of Baryta papers from different manufacturers.
A few suggestions that have been made:
Canson Infinity Baryta Photographique II
Moab Juniper Baryta Rag 305 as a replacement.
Ilford GALERIE Prestige Gold Fibre Gloss Paper
Walker Blackwell just emailed me and suggested Hahnemuhle Photo Rag Baryta.