We chose Melbourne because it had the overall culture and vibe we were looking for - and so far I'd say we made the right choice. My husband and I are massive cafe, bar and food lovers and we are struggling to get to all the places we said we would go before we came, purely because there is so much here! I work in the CBD so we meet up after work and do stuff here and then hubby works in Fitzroy where there are a lot of awesome bars and cafe's, so we tend to go there on a weekend. We are close to some amazing wineries and beaches and the fact the weather changes so much keeps it all interesting. No day is the same for me here!
I've been to Sydney with work which was great but seemed very hectic where I was, and I'm off to Brisbane for Christmas so can make some better comparisons then I guess!