Although its approach is more from the caterer’s perspective, the Web site for the UK magazine Caterer and Hotelkeeper published an article comparing the merits and tradeoffs off traditional versus automatic espresso machines: Coffee machines: traditional versus automatic.

The article cites analysis where traditional machines used up 22% more coffee than their automatic counterparts. However, the automatic machines required twice as many training sessions (surprising, given their push-button operation) and more than twenty times the number of service calls in a year.