CBA Diamond card OR Qantas American express Ultimate card

It's a piece of rubbish plastic that only earns 0.2 points per $, no typo here. Although this card (AMEX) has no foreign transaction fee and earn 1.2 points per $ on all overseas spend and at supermarkets, department stores and petrol stations in Australia.

Qantas AMEX Ultimate card is way better, free return flights until October 31st OR $450 travel credit after November 1st, 100000 bonus points until October 2nd, 2.5 points for Qantas services, 1.5 points for everything other than tax purchases, despite the fact 3% transaction fee applies overseas.

This card is basically "free" after $450 travel credit reimbursed to your account, provide you've paid $450 annual fee.