The Linea Mini has two stainless steel boilers: one for steam and one for brewing, allowing simultaneous steaming and shot pulling. The Gaggia Classic Pro has a single aluminum boiler.
In the blind taste test, both espressos tasted very similar. However, there was a slight preference for the shot pulled from the modified Gaggia Classic Pro; it was described as slightly sweeter and brighter.
The Linea Mini's heavier, mostly metal construction and its high-quality, etched and polished stainless steel tamper (compared to the Gaggia Classic Pro's flimsy black plastic tamper) suggest a longer lifespan for the Linea Mini.
This video compares a $500 Gaggia Classic Pro espresso machine to a $5,000 La Marzocco Linea Mini, examining their similarities, differences, and espresso quality through a blind taste test. The video explores whether the significant price difference is justified by the features and performance.