Welcome to Geekhack!
Sounds like you don't mind buying from overseas as there are bugger all keyboard in Australia.
Filco is good, but you will pay a bit more and also have a non-detachable cable (which is not an issue for some people, but can hamper portability if you intend carrying the keyboard around with you).
Ducky is also good, and actually I didn't know there was a TKL version of the G2 Pro!
And lastly you can't go wrong with a QFR or QFS - both are great, solid keyboards, and probably the best bang for buck (although many people do not like the legends on the key caps, and thus figure in a replacement set of keycaps too).