[katwoman]

Absolutely go for the higher credit line!

If Cap 1 doesn't give you a credit line increase, ditch the card. It's set up in such a way as to hope that you do go over their paltry limit and then will not be eligible for other, better credit cards thus insuring that you're stuck with them. If you don't believe me, google "Capital One" and read other boards to find out the whole story.

The good news is you're in a great position to apply for a American Express card since you are relatively new to credit! Amex is very good to credit neophytes plus it looks good if you have a prestigious card. I've said it before and I'll say it again.....you are the company you keep. If you are creditworthy enough for Amex, you will be looked upon favorably by other prime card issuers.