You can’t really get better than starship with the current chemical rocket technology. The reason is simple: the Tiranny of the Rocket equation. Starship exists

You can’t really get better than starship with the current chemical rocket technology. The reason is simple: the Tiranny of the Rocket equation. Starship exists just because of Raptor (2). An incredible engine, the first full flow engine to ever fly and that should be capable of about 230t of force.