Should I see Super rugby in Brisbane, Sydney, or Melbourne?

Going to be visiting Australia in May/June and had planned on seeing the Reds in Melbourne on the 29th, but schedule changes make that a little awkward now. Still definitely doable, but may prevent me from doing some cool stuff in Cairns or the Whitsundays time-wise. My schedule does allow me to see Waratahs in Sydney the week before or Rebels in Melbourne the week after. I'm just trying to figure out if those are also good games (want to have a good crowd) to go to or if Brisbane is really the place to do this and I'm losing out on too much of the experience by shifting to one of the others