Both the American Express Cash Magnet® Card and Discover it® Chrome offer enticing cash back rewards and introductory APRs. The Amex Cash Magnet edges ahead due to its longer 0% introductory APR period on purchases and balance transfers and its generous statement credit offer.
However, the Discover it Chrome offers a unique first-year cash back match, which can be highly rewarding.
While neither is a co-branded or store card, both are solid choices for their respective strengths in cash back and balance transfer benefits.