Espresso machines by use
Start from what you actually want to make.
Beginner
Easy to learn, forgiving, good first machine.
Latte & cappuccino
Steam power and simultaneous brew/steam for milk-heavy drinks.
Enthusiast / dialed-in
Temperature control, pre-infusion and flow for chasing the perfect shot.
Small kitchen
Compact machines for tight counters.
Bean-to-cup (super-automatic)
One-touch grind-brew-milk; least hands-on.