Which JetBlue card should you get?

JetBlue has a fairly straightforward rewards program. You earn 3 points for every dollar you spend, and each point is worth about 1.3¢ – in other words, you're getting slightly under 4% as a rebate in point form. (Taxes and fees on airfare don't earn points)

If you have the no-fee JetBlue Mastercard, you'll earn an additional 3 points per dollar spent on JetBlue flights, for a total of 6, which brings your rebate up to almost 8%.

But if you'd like to earn yet another 3 points per dollar and get a 10% bonus every time you redeem your points, you can upgrade your no-fee JetBlue Mastercard to the JetBlue Plus card. That brings your effective rebate up to 12.8%. (But beware! ONLY the primary cardholder gets the 10% bonus!)

The PLUS card carries a $99 a year annual fee, but also comes with a card anniversary bonus of 5,000 every year (a $70 value), bringing the effective annual fee down to $29. Ergo:

If you spend more than $700 per year on JetBlue airfare, get the Plus card. 

Quick sidenote: if you make Mosaic elite status, you earn yet another 3 points per dollar, bringing your rebate up to 17%. And this is without factoring in any of the 37,000 bonus points (worth $481) you can earn as you rack up the flights.

Since I had a JetBlue Amex, I got a weird hybrid card that's between the free and no-fee card:
4 points per dollar, 5% rebate on redemptions, $40 annual fee…