Discover the best credit cards to use if you only want one in your wallet, from simple cash-back options to travel rewards ...

Discover cards are currently not available on CNBC Select and links have been redirected to our credit card marketplace where you can review offers from other issuers like American Express or Chase.

It offers an industry-leading 3% cash back on nearly all purchases, but there's a waitlist and membership fee requirement. Plus, some redemption options are less valuable than others. The Robinhood ...