Chase credit cards. UR =Ultimate Rewards. Those that earn them are Chase Unlimited, Chase Freedom, Chase Sapphire Card, and Business Ink Plus.
Chase Freedom is a rotating category 5% earning, 1st quarter - Gas, 2nd quarter groceries, 3rd quarter restaurants, 4th quarter
amazon. currently, Wholesale warehouse is part of the groceries earning, so buy a $50gc for $47.50, u earn 237 pts. every 10,000pts = $100. This will limit u down to 3 months a year though.
Business Ink Plus - requires some sort of business though, ymmv. it gives u 5x on Office Supply stores, however, i use a site called gyft where u buy gc online and u can use them online/instores... I just discovered yesterday that the
walmart gc can also be used @
sams club. (untested, i havent bought a gc with a gc though)
these pts are better at redeeming travel tickets though, maybe u can use them at a higher redemption rate on airline tickets...