Digital BW, The Print

Hey Folks, I used to post quite a bit on this list then got side 
tracked for a while.  Was wondering if someone could take a look at 
this print...

http://www.rainbowstudios.com/people/jimp/thumbnails/index.htm


  Now I think I know why this is happening, pigment inks on glossy 
paper, even though it's the special "glossy for pigments" paper from 
Red River.  I am using the gen four black ink and my 1280.

  Has anyone tried the new The MIS GP Archival…

http://www.inksupply.com/index.cfm?source=html/arcink_gp.html

  Are they worth it?  The reason I ask is because I am seriously 
thinking about going back to bulk Epson inks, for more paper 
options.  Are so many people not using dye based inks due to the 
longevity issues?  Also, the nice thing about going back to Epson 
inks are the profiles I can get from almost any paper manufacturer, 
these can save someone a lot in profiling costs.  Just looking at 
other option before I commit back to Epson Dye inks, thanks in 
advance.

Jim