So you are looking for an espresso machine that stands out? The AnZa has you covered. It has a concrete shell with a Corian top, steel drip tray & frame, and porcelain parts. The unit relies on a PID controller to maintain perfect brewing temperature. It has a 15-bar ULKA pump and 9 bar pressure limiter.
The water tank has up to 1.5L capacity. The whole unit weighs 15kg. You can find it here.