It seems like you've sold your problem.
Also, I've just realised, WOW Sight and Sounds are only in Queensland and Darwin. If you ever see one on holidays (you can't miss them, they are big blue buildings with neon lights on them), make sure you go to it. They are jam packed full of everything from Game Consoles to Ipods to TVs to Stereos to In-car Navigation Systems to Computers to Cameras. They have everything.
Anyway, I found the DI-524 to be good for me but it may not for you. You will find it in Dick Smiths, it is a popular item, but it won't be $79.