You might consider looking at the American Express Platinum Card, it is not inexpensive but if you can make use of the benefits it is a pretty good card. I really like their car rental insurance, peace of mind more than my other cards that have it. My other key cards are Chase Hyatt (business and personal) and Bank of America Alaska Airlines. I travel more than most and all three are great travel cards. I do have the AA Citi but probably going to drop it, AE gives good AA benefits. The Points Guy does a good comparison. The sign up bonus on the AE Platinum card is pretty good as well.
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