This is one of the few banks out there that is still depositor-owned as opposed to having the normal shareholder structure of most modern corporations. I'm not sure if this is the true explanation or not, but I have found that this bank provides consistently excellent service, far exceeding that available at other banks.
In particular, I had a checking account with this bank for several years, during a period of low interest rates, which bore 1% interest during a time when few savings accounts bore more than 1%. This is just one example of the ways in which this bank stands out above the rest.
The staff here are always friendly and helpful. Sometimes there can get to be a line but it usually moves quickly. The ATM branch is not as extensive as many banks, however. This bank is excellent to use if you live or work near one of its branches.
Also, they get bonus points because they once gave me no fewer than THREE silver dollars when I got change from a teller.