I have banked with 5/3, National City and Huntington.
5/3 - Customer service is not their thing, They cannot be bothered to get your checks (when you get new checks) to you in a timely manner. Online Banking interface is nice but transactions are slow to appear, I mean sloooowwwwww. Even ATM withdrawals from their own ATM's
National City - Takes 2 calls to get anything done. I have never gone into the bank when I had an issue so that may have resulted in faster resolution. Haven't used their online banking.
Huntington - You have to play by their rules. If you don't, they will be happy to charge you a fee like Jallen said. The best online banking when it comes to speed. You wouldn't be on this site if you didn't like speed right?
CJ