No info on the Nespresso, but I have owned Keurig single-cup machines at home and work for many years. The main thing you need to know about the Keurig is that you cannot make espresso in this machine. Coffee (light to strong), tea, hot chocolate, and brew-over-ice cold drinks, but no espresso.

I currently have a Mini Brewer (http://www.greenmountaincoffee.com/A...ni-plus-brewer) in my office, and love the versatility.