After my last visit to Wonderland (about a year ago) I was very disapointed in the standard and the upkeep of their rides.
The Bush Beast is the worst woodie Iv'e been on. The brakes after the first drop and turn, where you virtually stop before going down the second drop is embarassing to say the least. It's roughness and lack of speed make it a ride you don't want to go on many times.
The Demon, while being an okay ride is oring after two or three rides. When I was in America I discovered that the Demon is a standard verkoma boomerang that is found in nearly every park. They were all walk on rides with no queue.
After Luna Park lost the Big Dipper to Dreamworld, Wonderland now has all the NSW market. Wonderland has to build a top coaster and soon.