Well what you have picked there will sound nice. I have a logitech 5.1 surround as well, and it is very nice. Lets see if I can find the link for it...
nope, I can't find the link to it. They must have quit selling my model. Anyway, it's THX certified, and sounds awesome! I think it is the predecessor of the Z-5500. Very similar setup, just not quite as many watts and a different controller.
EDIT: Here's a pic from the "my workstation gallery" of...my workstation Here you can see what I mean
I Live in australia,the cheapest i can get the Z5500's Is $370 on ebay,Or i might be able to pick them up for $320 from a local computer store (On Special!).I have to buy a new computer desk first though.
Oh, well that does make it a little more difficult doesn't it? Well either way, they are extremely nice, and I think they are worth that much. Does newegg not ship to Aus? I guess I would have never thought about it since I don't live there.