Service is going to be a Priority, any box can print, but keeping it running is going to be key at those volumes. Of the two existing vendors, who has made you feel the most comfortable with Service?
Ricoh is going to be an unknown as they were for us, but they have stepped up to the plate and keep us running, we have two 7110's and have close to a million clicks between the two of them, but you will be doing over that volume in 2 months. Having two of the exact machine has its advantages, parts being one of them, we are able to service our machines up to a certain point so a lot of the small/medium issues we can get ourselves back up and running.
Ricoh is hungry for the business right now, see what they are willing to give you to get your business and how many techs they have trained on that machine in the area and what kind of turnaround times they will promise.