May I suggest an alternative Rob? Don't buy another scope at all just yet and join a local astronomical club instead. There are at least two in Perth - The Astronomical Group of Western Australia (AGWA) <
http://www.astronomywa.net.au/> and The Astronomical Society of Western Australia <
http://aswa.info/about.html>. Attend a few observing sessions with some of these guys and take the opportunity to look through a variety of other people's telescopes (most people are happy to let you look through their scope if you ask nicely). After you've done that you'll have a much better idea of what kind of telescope will work for you personally.
Happy observing whatever you wind up doing.