I Loved It.
I lived in Darwin for only a month. Kind of an extended holiday driving around the country when i was 22. Anyway, I loved Darwin. I found it to have a very positive energy as a place. Full of fantastic landscapes and a wonderful cross mash of people. People were direct and straight forward. Strangers talk to you randomly, and are in alot of cases happy to give you their opinion.
I'd love to go back their and live through the 'build up' and cyclonic weather and friggin sandflies. Completely worth it... a beautiful place.