So after 15 years in store the long time survival of most of my papers should be the same independent of the original quality and price ?Here is a comparison of a few papers in regards to their UV response showing the difference between the HP Premium Plus Photo Paper and the Canon PT101. The high gloss and similar RC papers have the paper core sandwiched between very thin PE foils/films - on both sides - one side carries the coating. You cannot write reasonably or print on the backside because of that film. Lots of Fineart papers do not have the backside laminated,
some curl heavily after print - more than even cast coated papers. Such prints need to be framed directly after print.
Yellowing of papers over time - years - does not have much interest by the users overall, it's the paper base which can turn yellow and even optical brighteners when they degrade - and they do as fast as regular dye inks.
https://www.printerknowledge.com/th...ing-test-106-114-t54c-gi-53.16479/post-142203
https://www.aardenburg-imaging.com/lilis-redux/