If your worried about gamut they both have printers with light cyan and light magenta to get more colors. I have a dual cmyk setup (4 colors) for production. Oh and they both offer white and metallic inks... mimaki has a latex printer. I think mimaki offers more stuff and its cheaper. The take up reel is included. Also more inks available from aqueous to solvent, eco solvent, sublimation. Roland has only eco solvent
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