What is the "right' Envelope color printer for a 300-600k a month volume.

Rizo quality is not great and envelope feeders are problematic?
memjets cant handle the volume
Digital press with envelope fuser just too slow.
xante type are very expensive to run.

No worthy middle volume color envelope printer to do variable data?

 

600K a month? Did you consider to look at this other way around? Print sheets with your variable data and then convert them in to Envelopes?
I could work with you on making a xante/oki printer not very expensive to run but if you want to punch out half a mil monthly I'd say you need 2-3 printers to keep up. At least 2 printers with envelope feeders and back-up engine.
Where are you located if I may ask?

 

tswagg, what solution did you end up with?