I had a family emergency, so I to come back, otherwise I would have stayed there without a doubt.
Really nice country...nothing like what we see here on the TV. Sydney is quite cosmopolitan, diverse and really fast paced....similar to London...but obviously a lot hotter and has awesome beaches.
Brisbane is more chilled out though....still mega cool. If you get the chance to go man, do it, you won't regret it. If you're under 30, you could always get a 12month Working Holiday Visa, and head out there to see if you like it first. Tonnes of Brits out there too. Better paid jobs, better lifestyle....its a no brainer really.