Qantas without doubt
Thing about working in Oz is the ridiculously high direct and
indirect taxes - and set to become higher with a carbon tax.
Top that with the fact that Australia is very expensive to live.
The complexity of its tax system requires the services of a tax
accountant (and a damn good one at that) in order to ensure
tax minimisation. Country's extremely ubiquitous and highly
predatory federal tax agency (ATO) is certainly nothing like
Singapore's IRAS or Hong Kong's IRD.
One of course balances lifestyle, T&Cs, tax, cost of living etc
with salary which makes it a subjective choice, but purely for
top money and nothing else I'd go corporate ME.