Discover is a popular credit card brand, with over six million cardholders. Discover offers a wide selection of credit cards that include travel rewards, cash back credit cards, and student credit cards. Discover offers a variety of credit cards, with rewards rates and perks that are suitable for a variety of budgets and needs. The Discover credit cards currently offer 0% APR on balance transfers for 18 months. If you're considering a Discover credit card, this is one of the best credit cards to own.