I've upvoted you because it's useful to hear the opposite side - thank you. I've just spoken with some colleagues who say that their experiences with AmEx are

I've upvoted you because it's useful to hear the opposite side - thank you. I've just spoken with some colleagues who say that their experiences with AmEx are uniformly poor, so I guess things vary widely and wildly. I wonder if being a platinum holder changes things, and just how hard it is, how long it takes, to get to that level.