I've been emailing them questions, and they get back to me in very short time.
Ummmm... I like my K2, but I am getting ready to really upgrade the electronics package that interfaces with the PC via parallel port so that when one of my drives faults out, it will stop Mach3 from processing the part file any further.
I don't have a stepper system, so I have nothing to add there.
I have the 892 router and like it.