I have used Jon Cone's NK7 inks, from Inkjetmall for printing on matt papers with excellent results. He is currently testing a new formulation that will permit printing on glossy papers and will achieve a greater dmax. To use these inks with the 3800 a CIS must be purchased, and it is expersive for that model.
What you should do is get a good book on digital printing, and put in more time before you contemplate a switch. I can get very good b/w from my 2200 (using the Quad tone RIP), but as others have said, it does take time. At Calumet I have seen very good b/w output from the 3800.
Good luck!
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