Digital BW, The Print

Hello -- I'm contemplating if I could improve my 2200's d-max on matte 
paper by using a third-party ink to replace just the matte-black 
cartridge in my 2200. (Meanwhile, I'd stick with the OEM ultrachromes 
on the other colors, so as to not rock the boat too much). Yes, I know 
that an R2400 upgrade would get me a higher D-Max, but I don't feel 
like replacing my 2200-with-ImagePrint6 system.

I know MediaStreet sells a G-Chrome (G6) matte black cartridge which 
might accomplish this, but I have no confirmation as to whether it 
would produce a better black than the 2200's OEM MK. Also, there's 
probably a comparable ink sold by MIS. Anyone with info that might be 
helpful? Should I go for it?