Lining up a couple of espresso machines and comparing them against each other in terms of functional features, technology and build quality is one way of determining which machine is the best fit for your particular needs. Another tactic is a straight up espresso shot comparison -- holding a practical, blind taste test between machines to see if you can taste a difference in the shot glass. In response to a viewer requesting that we compare the Breville Dual Boiler against a machine with an E61 brew group, we asked Gail to setup the Rocket Espresso R58, dial both of the machines in using a Mazzer Mini coffee grinder, then pull shots simultaneously. Next, two willing volunteers from our Bellevue retail store, Michael and Kevin, donated their tastebuds to the cause and they gave us their opinion on how the shots compared, flavor-wise. Ever wonder how the Breville's brew head technology measures up against the classic, tried-and-true E61? Watch this fun video to see how they compared this time! Of course, the coffee you use will definitely play a part in this equation, and you could go further with this by performing several blind taste tests in a row and then averaging the opinions, but here's our first stab. Enjoy!