I'm planning a long (over a month) vacation overseas and have been investigating my credit cards for their fees and other benefits to figure out what to use when overseas.

Domestically, I always use a Chase Visa 1% cash back card (with 3% for gas, groceries, etc.). But this credit card company charges a 3% foreign currency fee. Apparently, Visa + Mastercard charge 1% for the conversion, but many providers add on an extra 2% (for essentially doing nothing).

My USAA debit card charges no currency fee for withdrawals, but I don't have a credit card with them and would rather use credit cards for fraud protection.

I always though American Express was supposed to provide good cards for travelers, but they charge 2%.

What do users here think is a good credit card when traveling internationally? A good card would have low foreign currency conversion fees, and maybe offer something additional (rewards, or benefits relevant to the travel). There are a number of threads about foreign currency fees especially about particular cards, but I can't really find a good answer to this question in general.