Internationally I love Emirates - they have FANTASTIC service compared to the others and the goodies that they give the kids to keep them entertained are outstanding, they even take photos of the kids on board as a souveneir. Food is yum and the tv/entertainment is great too, so many choices.

I find Qantas staff internationally cannot be bothered. We use Qantas domestically mainly for frequent flyers as my DH travels a bit for work.