I assume Vincent is refering to the original Photo mate of HP
the HP Matte media, with the right image this paper produces fine art quality prints
(from Vinvent's review)
Wilhelm Research ranks the paper for some 14 to 21 years.
I did not use the HP paper but I will do so. The HP 30 / 90 / 130 sereis produces excellent quality on almost every kind of paper as long as there is no interaction with the chemestry on the paper. E.g. Tetenal glossy 290 g/m^2 does not work. (ICC profiles must be done to archieve the best quality)
I've tried Hahnenmuehle PhotoRag 188 g/m^2 with stunning results. But I do not know how long they will last. So I will purchase the HP Matte paper to see the results.
The HP Premium Plus papers are very affordable in rolls and very nice to use. The review prooved (IMHO) that it is best to get the 130 instead of the 90. You get some extra 6 inch in width and the same printing quality for only a few bucks more.
I've just started to print large format b&w negatives and I am surprised by the apperance @ 48 x 68 cm (2400 ppi picture converted into 600 ppi for the printer). If I would only want to print 35 mm scanns or digitaly taken pictures I'd go for a smaller one e.g. the 1800 or 2400 of EPSON.
If you have enough space in your digital darkroom go for the 130 series (IMHO)
If you see the first time real big prints you might get the same impression as I do
VBR <=> jo-1