So which is it?

Sydney: I live in Sydney and it used to be great, but now there's just toooooo many people.
Traffic jams every single day of the year.
Infrastructure is worse than it was 10 years ago and 2 million people less.
It's also too expensive $600-$1000 a week for renting 2 bed'er, 2 bathroom with garage.

Melbourne: I lived there for a little while 10 years ago, never really liked the weather, beaches or city much... rent was cheap (but so was Sydney at the time).

Brisbane: It's built on mud flats! But the people have been really nice every time I've been.

...???