Which is the best and worst bank in Nigeria?

[Also]

When rating banks we will use many factors like customer service, product quality, branch network, corporate governance, resilience and also brand perception among other factors.

Some banks are new generation while some could be regarded as grannys.

Among all Naija banks, which one would you rate best and worst? And why?

[Deon]

So far, UBA has never disappointed me yet.
They have my vote as the best

As for the worst banks, Zenith and GTB

Personal opinion tho