I was just chatting to my younger brother and he let me know he was getting 2.5% pa on his savings. It seemed unbelievable but it's true! The 'catch' is that you must be 18-29 and it's only for balances up to $30k (plus you have to do some other bits and pieces, ie, grow your savings account balance each month and make 5+ transactions on the card).
But at the end of the day, 2.5% is a cracking savings rate. For comparison, if you had $20k in savings, compared to 1.5%, you'll make an extra $200 a year, which isn't too shabby.
On the other hand, Westpac funds polluting fossil fuels, so that's another thing to take into account.
EDIT: monthly fee of $5 on the "choice" bank account unless you meet certain criteria (explained in the link).
Mod: Previous deal. Duplicate exception: “The original deal is active but older than 6 months.” Guidelines
Mod2: As of 2021-09-18, the interest rate has dropped from 3% to 2.5%.
https://www.ozbargain.com.au/search