Liz, that phone you have selected doesn't connect to 3g or NextG.
Makes it pretty useless in Oz.
I have the HTC Desire and it is far better than all the iPhones in many ways, but the diehard 'i' fanatics will argue.
Even though I have the HTC Desire, may I suggest getting the HTC Wildfire with Telstra NextG comaptible access.
They have now been reduced to $249 at Officeworks and many other places:
http://www.officeworks.com.au/retail...ones/TEHTCWFBK
HTC's are excellent phones, and the Android system is fantastic.
Has 'Flash', sideloading etc etc