Best port of the lot because it has been our home for the past 6 years (POMS IN OZ)
It is seriously one of the best ports in the world.
Usually docks right in the middle of the action at Circular Key but due to increased cruise ship activity, this may always be possible, but what ever happens, alternative berthing should not be too far away.
No need to book ship organised trips here. Plenty to do without joining the throngs on a bus.
If you must book trips, do so online.
Blue Mountains trip OK but the time it takes leaves little time to enjoy this fabulous city.
By the way, I'm English, not an Ozzie