The smaller Aussie festivals of around 15k capacity are awesome, you can bring your booze in (no arenas as per glasto), drive into the campsites and set up right next to your car (no lugging stuff around, leading to insane levels of fully furnished camps featuring sofas, cocktail bars etc, you can stumble into great parties) Happy to give recommendations/answer questions if anyone is interested!
The larger ones that attract international acts aren't worth it IMHO, very expensive/corporate and don't match up to European standards.