I am not sure if you’ve heard of TravelSIM yet, but check out their site here:
TravelSIM
If you know anybody who is going overseas or on an international trip of any kind, they need to know about TravelSIM. Basically you can use your mobile phone with their SIM card and you get very cheap roaming calls. [...]

Webjet now includes all taxes and surcharges in the costs of their international fares!
That’s a pretty impressive improvement to help you with udgeting for travel.

I recommend Virgin Blue for your business travel.
It’s cheap with the convenience of being able to change your flights if need be.

It has a great frequent flyer program.
And, most importantly, The Lounge means you can wait for your flights in comfort.