Every year around March or April, when spring arrives and the weather warms up, I feel the urge to deeply clean and refresh everything in my life — from my wardrobe and home to even my credit cards.

Thanks to its rotating rewards and great welcome bonus, this card is one of the most flexible and rewarding cash-back credit cards available. Evan Zimmer has been writing about finance for years.

Hotel perks can include annual free nights and an extra free night when redeeming points. Limited-time offers, like the current Southwest Companion Pass, can help cut the cost of airfare. Cash in your ...