Spoiler alert. On this list, I find the FIA Fidelity AMEX to be the most valuable. I just love that card so much.
And this post is gonna be focused on Serve.
Note: It is possible to send money between Serve and REDbird, or Serve and Bluebird.
So if you’re managing multiple cards, you can get a Serve card, load it up for $1,000 each month, and send it to Bluebird or REDbird to pay bills that normally don’t accept credit cards. Like student loans, utilities, mortgage payments, or anyone else.