Digital BW, The Print

No response in Quadtone Rip group, so trying here to reach a wider
audience:

For anyone who has done this (and prints using QTR, of course), are
you happy with the switch? Did you have any problems with clogging?
What differences did you see in image quality (if any) over
Ultrachrome? Do you refill cartridges, and if so, how much
trouble/time does this take?

Thanks for any info.

--John