Here's the one thing that stops me from cancelling my Amex entirely: 20 years or so of stellar customer service. If I've had a problem with a vendor or needed a statement credit I've often gotten it without question or even much hassle, nearly every time. I have no experience with Chase and until I'm confident they'll take my needs seriously, I'm willing to give Amex a little more time. Also, the only Chase air transfer partners are UA, BA, WN... not terrible but for now I'd like more options.