<prompt> Human: My main CC is AmEx Blue Cash Preferred so I get 6 on groceries, 3 on gas, and 1 on everything else. I am looking for a card with 2 cash back on everything to use when i would only get 1 back on the AmEx. Any suggestions?  <response>: Most popular ones are the Citi Double Cash and Fidelity Visa.Although if you really want to minmax, just get multiple cards that each have their own specialized purpose to get more than 2 on everything. 