I have both a checking account and several savings accounts with JP Morgan due to their high interest rates and how easy it is to open accounts with them. The account opening process takes minutes and there are no minimum balance requirements. Every single time I've called customer service, I've had such a great experience. Their customer service representatives are knowledgeable available 24/7.
The most recent account I opened was an additional savings account. I called because I had questions about the transfer limits and the representative didn't just answer my question, but explained why there were transfer/withdrawal limits on savings accounts. She took the time to explain how the federal regulation that governs these accounts limits my withdrawals and talked to me about my activity and whether or not that would be a good account for me. She was not only immensely helpful, she went out of her way to explain the situation to me - which is something I've never had a bank representative do for me.