This determines how long the machine takes to warm up and if you can steam milk and brew coffee at the same time.
For the purists. You physically pull a lever to create pressure. It offers the most control but has a steep learning curve.
Buying an espresso machine is a big step for any home barista. To find the right fit, you need to balance your morning routine, your budget, and how much "work" you actually want to do for your caffeine fix. 1. The Type of Machine (Your "Effort" Level)