This. Amazon card gets better returns for me on Amazon purchases (plus it got stolen half a dozen times so now it only gets used on Amazon...this happened becau

This. Amazon card gets better returns for me on Amazon purchases (plus it got stolen half a dozen times so now it only gets used on Amazon...this happened because someone physically pried my locked apartment mailbox open and used that info to order more replacement CCs to their address), other card gets better returns for travel at restaurants, other card gets better returns for everything else, then I have a debit card since some gas stations only accept those. I also carry cash since some places are cash-only, and some parking meters only accept quarters, so I have a stack of those in my car as well.