Well, lets see.
Melbourne Coasters: Scenic Railway (A.C.E Classic, BTW), Metropolis and Silly Serpent.
Sydney Coasters: Mad Mouse
Melbourne Flat Rides that go Upside down: Enterprise, Pharos Curse.
Sydney: Enterprise, Ranger
Melbourne other Rides: Spider RIde, Swinging Ship, Dodgems, Michael Jackson Simulator, Ferris Wheel, Ghost Train, G-Force, Frog Hopper, Dumbo Elephants Ride, Other juniour rides., Caurosel.
Sydney Other Rides: Coney Island Midway ( Fun-house type rides), Dodgems, Tumble Bug, Rotor, Spider, Ferris Wheel, Tango Train, Carousel, Other little Kid Rides.
I would say Melbourne. But i guess i am from Melbourne, So i am a bit biassed.