Digital BW, The Print

I recently upgraded my R800 to Epson 4000.  kind of like going for VW 
beetle straight to Jumbo Jet....but anyway, I never had much luck 
printing B&W with the R800

So..I was wondering what B&W options are out there for the 4000 (inks, 
papers, and software).  

I know about the three built-in blacks, and have tried them on luster 
and enhanced matt,but that's it.  Any tips or starting points for 
research would be appreciated!