Bank of America Credit Cards

I already have a Bank of America Power Rewards card, but everytime I login to online banking, they offer me another credit card. Does it make sense to apply for a new card?

The two cards they are offering most are:
* WorldPoints Platinum Plus Mastercard
* Bank of America American Express card

It is a tough call. Bank of America has been good to me personally, but I don't want to push it.