What are important factors to consider for a bean-to-cup machine? I'm advocating for my office to purchase a bean-to-cup coffee machine to replace an auto-drip machine. What factors should I consider before suggesting a particular bean-to-cup machine? I'd be happy to hear anything from general warnings to full-fledged product recommendations.

My primary hope is for this to be as pleasant and pain-free as possible, both for consumers of the coffee (e.g., produces a good cup), and for maintainers of the machine (reasonable to service/maintain). This is for a small office, "medium duty" -- perhaps 100 cups per day. I'm hoping to avoid pod-based machines, for less waste and better freshness.

I'm primarily interested in drip-strength machines, but perhaps this is a terrible idea for this kind of machine. I hoped that there might be a small number of obvious choices, but I'm seeing a dizzying array of offerings. I fear that I'm missing something crucial. Noise? Quality? Ease of cleaning the hopper? User-empty-able bin? Quality of grinder? ...?

I see a few reviews that were decent, but not entirely what I'm looking for:


This one, which seems really to be super-auto espresso machines;
This one with similar offerings;
This one that is all over the map but is for small-scale / home market;
This one, with some office-oriented questions to ask, but is more heavy-weight than I'm seeking ("is tech support going to site-visit before the under-caffeinated masses revolt?")


Does anyone have experience with particular machines? If you've used these machines, what is the worst or best feature about the machine in your office? Are there other important considerations that I'm missing?
Some major factors for consideration:
1) Manufacturer and warranty - with more integrated parts I've had to return or replace my fair share of these (and finally moved to separate machines for better taste and performance at the cost of convenience).
2) Capacity - how much are you brewing and for whom? 
3) Adjustability - ability to vary the grind based on the bean / strength of coffee you desire.
4) "Cleanability" - how easy is it to disassemble the machine to clean it - with these integrated machines it is essential that you break them down and clean them frequently to maintain good taste and performance.