Here is my top four taken from my blog here.

• American Express Fidelity Card, 2% Cash Back, No Limit, No Annual Fee
• Barclay Arrival Plus, 2.22% Statement Credit On Travel Purchases, No Limit, $89 Annual Fee
• U.S Bank Cash+, 5% Cash Back, $1,500 Per Quarter Limit, No Annual Fee
• U.S Bank FlexPerks, 3x Points (6% In Travel), No Limit, $49 Annual Fee Waived First Year

If you give Capital One’s No Hassle Giving Site and use a Capital one credit card, they will cover the processing fee for the charity.

This post contains a link to my blog, I've listed all the relevant information so you don't need to visit the site as per flyertalks rules.