Digital BW, The Print

I've been using MIS inks on an Epson 4880.  The ABW seems as good as it is with Epson inks, and I have no complaints about the colors, either.

I now have a 3880 as well, and a set of refillable cartridges on the way. The 3880 will be used for Photo Black, and the 4880 for matte.

I will soon finish off the MIS "K4" ink I have.  Before I reorder, I wonder whether there are any other 3rd party inks I should consider.  Is MIS as good as it gets for full color + ABW?

Myron