Note that the VS-640 comes in three different configurations. You choose what configuration you want the first time you install the printer.
A) CMYK+LightCyan+LightMagenta+White+Metallic
B) CMYK+LightCyan+LightMagenta
C) CMYK
We run our at configuration A, so I have no real life experience with the other configurations.
Configuration A requires 8 cartridges – but as far as I know configuration C also requires 8 cartridges (dual CMYK). If so, that must also have make the printer twice as fast as running configuration B.
/Jesper