Wow the OKI wide formats! Haven't run across any of these yet. I do remember that Oki bought a minor wide format player a number of years ago. Ah, now I remember, it was the Seiko wide format devices. I need to brush up on this one for you.
The first thing I would lead with is how long Ricoh has had the same digital print engine. I believe it to be one of the most reliable engines on the market today.
The Ricoh MP W6700 and MP 7100 are identical except that you can add a dual roll feeder to the MP 7100, you can also add the scanner detach unit (makes it a separate scanner and printer), the MP 7100 has a speed of 10 "D" size per minute compared to 6.7 for the MP 6700.
more to come