Which Aus capitol has the best road/car infrastructure?

Which Aussie state capitol gave you the best "regular" driving experience? I am talking about the 99% of driving people do - commuting, errand-running etc.

Good sightlines, uninterrupted flow, smooth pavement...

I'm hoping for a more nuanced discussion rather than the typical dunking on Sydney/Melbourne. Especially interested to hear from people who have lived and worked (not just visited) for a few years in different cities. Having moved from Perth to Adelaide I’ve realised lower population doesn’t necessarily mean better.