While I understand the convenience, (especially in an office setting, where traditional coffee pots can be a real mess) I've been kind of skeptical about these brewers. I personally think the price of those "cups" is insane. (I know, some folks don't ... YMMV.)
Anyway, I was checking out the new machine and discovered this one had an extra part: A little holder with a mesh filter inside. Turns out you can use any loose coffee or tea you want ... put a tablespoon or so of grounds in the mesh basket, pop the holder into the machine and hit the button. Voila! Fresh-brewed coffee.
'Course, you gotta wash out the holder and filter. But a small can of coffee is still less expensive than the single cups ... and there's less waste going to the landfill.