After a marathon effort of online research I ended up settling with a JVC KW-AVX 810 two din Multimedia head unit. For $570 including shipping from the USA, nothing came even remotely close in Australia.
It's got every feature known to man, AV inputs and outputs, SD and USB inputs, ipod direct control, and a whole lot of other stuff I will probably not even use (who actually watches DVD's in there car anyway?) At the end of the day, i'll just be happy to be able to use my ipod!!
just do a little more research before committing. I was looking at getting from the US but then was advised that their FM frequencies are slightly shifted from ours, like by about .5 mhz, so it wouldn't lock on properly to any of our stations. Not sure the value of truth in that but worth looking into.
If you have an existing DVD HU/ Screen, is there anyone who makes a GPS unit that will output to an existing screen?