best credit cards of 2015

If you like to maximize your rewards, try the American Express Blue Cash Preferred. platinum cards APR: 0% on purchases and balance transfers for 15 months; 13% to 22% thereafter Annual fee: Sign-up bonus: 0 after spending ,000 in 90 days Rewards: 6% cash back on up to ,000 spent at supermarkets annually; 1% cash back after that