National Australia Bank - one of the four largest financial institutions in Australia serving 8+ million customers.
NAB does the basics well enough. My current account works fine, cards work abroad, and I haven't experienced any security issues. But they don't offer anything that really stands out from competitors. Interest rates are middling and the rewards program is underwhelming.
Pros: Reliable basics, international card works well
Cons: Nothing that stands out, low interest rates
I've had both good and bad experiences with NAB. Day-to-day banking is fine and the app works. However, I had a terrible experience trying to dispute a charge - it took weeks and multiple calls to resolve. The resolution was fair in the end but the process was frustrating.
Pros: App works well for daily banking
Cons: Dispute resolution process is slow and painful