TechGearLab

The Breville Dual Boiler is one of the best options for those who want all of a professional-grade machine's capabilities in their kitchen &mdash; if you can stomach the premium price. The Dual Boiler consistently pulled cafe-quality shots and steamed creamy, luscious milk in our testing. The double boilers allow you to brew espresso and steam milk simultaneously, cutting down the time it takes to make a latte. Concurrency with brewing and steaming will also enable you to pour freshly steamed milk into the freshest brewed espresso, which is the best practice for creating the highest quality drink. Despite this impressive pedigree, the Dual Boiler keeps its user experience reasonably straightforward and beginner-friendly. You'll need to learn to grind and tamp coffee and steam milk manually; however, the intuitive interface and helpful feedback provided by an LCD output and pressure gauge make those processes feel more manageable than they do with some other semi-automatic machines. 
Its massive price tag is the obvious downside of the Dual Boiler, and you'll still need to purchase a separate coffee grinder. We think the Breville Barista Express and its built-in grinder is sufficient at a more reasonable price for those looking to make high-quality lattes at home. That said, the Dual Boiler won't disappoint if you're willing to pay a  premium for that extra bit of performance that brings you to third-wave cafe-level capacity. 

The Breville Dual Boiler is one of the best options for those who want all of a professional-grade machine's capabilities in their kitchen &mdash; if you can stomach the premium price. The Dual Boiler consistently pulled cafe-quality shots and steamed creamy, luscious milk in our testing. The double boilers allow you to brew espresso and steam milk simultaneously, reducing the time required to make a latte. Concurrency with brewing and steaming will also enable you to pour freshly steamed milk into the freshest brewed espresso, which is the best practice for creating the highest quality drink. Despite this impressive pedigree, the Dual Boiler keeps its user experience reasonably straightforward and beginner-friendly. You'll need to learn to grind and tamp coffee and steam milk manually; however, the intuitive interface and helpful feedback provided by an LCD output and pressure gauge make those processes more manageable than with some semi-automatic machines. 
Its massive price tag is the obvious downside of the Dual Boiler, and you'll still need to purchase a separate coffee grinder. We think the Breville Barista Express and its built-in grinder is sufficient at a more reasonable price for those looking to make high-quality lattes at home. That said, the Dual Boiler won't disappoint if you're willing to pay a premium for that extra bit of performance that brings you to third-wave cafe-level capacity. 
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Dual Boiler Comparison