I would probably just stick with the cards you have. If you don't use it much and you pay in full, then the 1% reduction in apr probably isn't worth the damage it will do to your credit history. Every new account adds a hard inquiry and reduces the average age of accounts. Keep using your amex and save this card for international travel. If you want to get a new card, you might as well get one with one of those big upfront bonuses!