What type of coffee-maker has been the most successful? To provide the most coffee, a standard coffee maker would make sense; but to cater to a higher-end client base, should we have an espresso machine? or a single-cup maker, like a Keurig?
I have a Keurig, which seems to work well. The coffee in a standard coffee maker gets a muddy taste pretty quickly, and espresso machines–especially if people are making cappuccinos–can require a level of skill to operate properly.