As someone who currently has the following machines in use:
Xerox C75
Xerox 2100
Ricoh 7200SL
Ricoh 7210X
and our nearest competitor, who we are pretty friendly with has a Versant 180.
I would say that while the V180 shares a lot of the 2100 features, the neighboring shop has a lot more trouble running difficult papers, that we can run just fine on our 2100. They are on their second 180 and still seem to have a lot more paper transport problems.
I think the Ricohs have the edge when it comes to registration and holding registration week to week and so on. I also think the 2100 toner is too dull. The Ricohs look more press like and are just gorgeous. Take a look at some printed samples of them next to samples you run on the 2100. Oh and they have drums that last much longer.
The only downside, or maybe upside, depending on your tastes, is that the Ricoh gives you a lot more options and sometimes takes a little more tweaking. If you are comfortable and take the time to learn and do some trial and error, it will give you great results.
Changing machines requires a learning curve, so it is always good to have another machine to keep running during that period.