Digital BW, The Print

I am using Gen-4 ink in my 1280. My papers of choice for the "good
stuff" are the Hahnemuhles, but at about $4 a crack for the 13x19, it
really have to save it for the "good 
stuff". For in house proofing and general commercial grade prints, I
was using regular Epson Matte Paper Heavyweight. I like the weight
and it renders detail with great 
crispness, and you can't beat the price. After reading about this
paper using a brightner that will yellow in time quicker than most,
the search began for a substitute. Even though 
it's listed at 167g/m2, it feels heavier than the Hahnemuhle 170
photo matte. Is this just my imagination? Also, it seems that Epson
is changing over their Archival Matte to 
Enhanced Matte, and I read their are some batch problems with
Enhanced Matte sometimes shipping yellower than other batches. Maybe
I should stay away from all Epson ink 
and paper altogether. I've tried Legion Photo Matte, but I felt it
was too cool/bright for my personal tastes. Any suggestions would be
most appreciated.

John Luke