I can give you some pros and cons in living in Brissy.
Pro: Better affordability/availability of property due to current surplus; warmer - as to the climate; brighter - more sunshine, but I do prefer gloomy weather conditions of Melb; smaller city - less market competition/job competition (con is less industry and job availability); relax atmosphere/laid back/family oriented; more trees/parks.
Con: Konti lang mga resto compared to Melb so what do you do instead of eating, mag exercise na lang sa dami ng gym at parks at swimming pools sa south bank or council pools sa iba't ibang suburbs, yes I know eating is one of the few pleasures in life; Mas kaunti ang shopping district so online na lang, sadly you may not be spending too much or paying additional gst so you aren't helping the economy, tsk; Melb trains/trams aren't affected by light rain like here in Brissy, but hey at least they don't explode/caught in flames like in Melb; Annoying people, they'll greet you g'day, how are you, and smile, poker face is the Melburnian's natural look.
Sorry, nag joke lng sa Melb. Well bottom line is Melb - big city, faster paced, urban living; Brissy - smaller city, laid back, family oriented. Question is which one is you gimik oriented or laid back.