The best cash-back credit cards to add to your wallet

We love travel rewards here at TPG, but sometimes cash back is king.With a cash-back card, you don't have to worry about maximizing redemption value or limitations on how you can use your rewards. You can simply use them for anything at almost any time — and sometimes, that freedom is the most valuable option around.I've been in the points and miles world for more than 15 years and could write all day about the travel I've been able to experience thanks to the credit cards in my wallet. But eventually, I realized I wanted my rewards to help cover things like moving boxes and late-night pizza runs instead of plane tickets and swanky hotel stays. Cash-back cards to the rescue.If you're in a similar season where flexibility is the name of the game, there's a cash-back card (or two or three) in this list for you. And even if you're focused on travel rewards, some of these cash-back cards can become travel rewards with the right card combinations.Here are our top picks for cash-back credit cards.The best cash-back credit cardsBlue Cash Preferred® Card from American Express ($0 introductory annual fee for the first year, then $95; see rates and fees)Chase Freedom Unlimited® (see rates an...