From my tests with printers under $500. It seems some are better for BW and others for color. A $100 printer may do better at BW than a $500 printer. But it may not do as well with color as the $500 unit.
Are the higher end $1000 printers a 'do it all' printer and excell at both color and BW? Or does one need 2 printers for the different mediums?