I'm not a fan. They like to play the game of "unlimited credit limit". Until you spend more than your secret credit limit that is, in fact, not unlimited. this was years ago, but I was unable to get them to tell me what the secret limit was until I tried to make a large purchase and they blocked it. then we had to play a stupid game of hypotheticals. If I were to attempt to make a single purchase of $75k next week, would it go through? What about $100k?