Digital BW, The Print

My C86 have served me well for a couple of years, loaded with MIS EZ  
ink, but I'm starting to mess the border with ink.
I've tried to clean the rollers etc and it has helped a bit, but I  
think its time to start to look for an replacement.
I've been looking around, and it seems the R220 is hard to find.  
There is some R320 and R340 available,
are any of them working the same, with MIS ink, as the R220?


Thanks,
danny