Ozskipper - my dear - you're shopping for luggage! How exciting!
BC is right with the Oyster...have one myself and it's done so many good trips for me on staff travel (sadly, not in a professional Long Haul capacity!)
Don't buy any cabin bags, as these will be supplied to you by QF. If memory serves, the only luggage you're allowed to bring along is that which QF supplies to you.
Correct me if I'm wrong...
Are you excited now...if so, wait till the day before training!