Other suitable classes are the EC12 - Soling - Laser.
Information on these boats along with a good selection of secondhand boats, can be found on the ARYA website www.radiosailing.org.au
There are also many kits and off the shelf yachts you can purchase from hobby shops. Not recognised as class yachts but can be fun to sail and a cheap way to start and see if you like the sport.
The International One Metre Class has been the most popular at Patterson Lakes Radio Model Yacht Club, however the Micro Magic is also getting very popular and the Marblehaed class which in the past has been the most popular is still very popular.
All radio controlled yachts are most welcome to sail . Beginners will receive all necessary help to get started.