Envelope printing and volume

[pressprint]

We are considering a Xante/oki for envelope printing. Does anyone know if it could handle 40 - 50k per month, primarily #10's. Also, I am intrigued about going for the oki and a straight shooter envelope feeder, I think that may be the most cost effective set up assuming it works. Is their any dissadvantage to getting the Oki over the (modified) Xante.

Thank you for your input.