Start with your routine
A piston espresso machine makes sense if you enjoy the ritual: grinding, dosing, tamping and tasting the result. If you mainly want one-button cappuccino, a superautomatic is usually the calmer choice.
Think in drinks per day. One espresso after breakfast asks less from a machine than four cappuccinos in a row.
Single boiler, thermoblock or dual boiler?
A compact thermoblock machine is quick and practical. A single boiler can make excellent espresso but asks more patience when switching between brewing and steaming. A dual boiler is more comfortable for frequent milk drinks.
For most beginners, stable workflow matters more than exotic specifications. You want predictable temperature, enough space around the portafilter and controls you understand.
Do not forget the grinder
Espresso is very sensitive to grind size. A good grinder often improves your coffee more than a more expensive machine. Leave budget for it from day one.
If you buy a machine first and use pre-ground coffee, the result will rarely show what the machine can really do.
A good first setup
Choose a machine with clear controls, a suitable basket size and enough community support. Pair it with an espresso-capable grinder, a scale and fresh beans.
That simple trio gives you more control than a shiny machine without a matching grinder.