Consumer Reports did a study in the November 2008 if you can get your hands on a copy (library).
Best cash-back cards Good if you pay off your balance regularly. If you don’t, opt for a nonrewards card with a lower APR.
Blue Cash from American Express 12.49 to 18.49% 5% cash back at supermarkets, gas stations and drugstores; 1.5% elsewhere. 0% APR on new purchases for up to 12 months. Offers a fixed 2.99% on balances transferred for 12 months (3% transfer fee). You only get 5% and 1.5% back on purchases made after you’ve spent $6,500 within a year; if you spend less, it’s 1% and 0.5%. Card is best for big spenders.
Capital One No Hassle Cash Rewards 9.9 to 16.9 2% cash-back on gas and groceries. 1% on all other purchases. 0% intro APR for up to 12 months. No limits on cash-back rewards, which never expire. $29 annual fee charged to people with lower credit scores.
Chase Freedom Visa 9.99 to 18.99 3% for every dollar you spend on gas, groceries, and fast food for the first six months, 1% of every dollar you spend in other categories, $50 credit after first purchase. 0% intro APR for up to 12 months. 3% rewards are limited to $600 in purchases per month; after you reach $600, you earn 1%.
Discover More 10.99 to 18.99 5% cash back in various categories on up to $400 of quarterly purchases, 0.25% on other purchases up to $1,500 in annual spending; 0.5% from $1,500 to $3,000; and 1% after $3,000. 0% on new purchases for six months, 0% on balance transfers for up to 12 months (3% transfer fee). Better deal if you redeem points for gift cards with the 100 retailers they partner with because you can get up to double points. Lesser reward for cash-back option.
They also had best rate cards and gas back cards.