What is obsession with speed please?
Even good old PCA marks devices against each other by speed.
The R300 is first and foremost a High quality Photo Printer.
The applications have to 'think' about 6 colours
If you want speed go for a faster printer
It will print your crap photos faster
but the best takes just a little longer.
I have a beat up old Tall1y 9008 laser for black
and I keep my R300 for Best Photos [Keeps the ink costs Down ] and the odd posh letter with a splash of colour.