The Essenza Mini and Citiz are almost identical machines, both using original line pods to brew quick customizable espressos or lungos. However, the Essenza mini is more compact and lighter with a smaller footprint compared to the Citiz. The Essenza is also quieter. But the Citiz is tall enough to accommodate larger mugs. And the Essenza water tank is 20 oz vs the Citiz's 33 oz. The Citiz also comes bundled with a milk frother which the Essenza Mini does not.