Digital BW, The Print

I've been going through the Wilhelm site to compare glossy papers as I 
want to standardize on a reasonably archival paper for some B&W (R220 
UT-R2) and most of my color work (second R220 MIS PRO).  It looks like 
I'm going to have to order custom profiles for each type of paper I 
choose.  I don't mind paying more for the few prints I like enough to 
print at home, so paper cost isn't a big issue for me.

On Paul Roark's pages for the R220 UT-R2 he listed Epson Premium 
Semigloss as the most archival paper with no uv-brighteners, but under 
the K3 printers on Wilhelm's site, the Semigloss doesn't seem to do as 
well as luster and Epson Premium Glossy and apparently does have 
brighteners.  Under the new Claria printers Wilhelm compares Ultra 
Premium Glossy with Premium Glossy.  I was quite surprised that he 
listed both these as lacking UV brighteners- UPGPP is a *very* bright 
paper.  Their archival performance seems identical according to Wilhelm.

I did not see any mention of Crane Silver Rag, Innova Fibaprint, Fine 
Art Pearl or other new fiber-type papers- is there any data out there 
on how well these papers will last?  Are they likely to perform better 
or worse than standard Epson glossy and semi-glossy papers with pigment 
inks?

Any information would be appreciated.