You have it correct, the only difference is the free checked bag. So, if you're like us and only need one checked bag per couple, you could book one of you with the checked bag and one without. In general most people are fairly happy with Jet Blue, but it's just like any other airline, they have their issues too. Look at your options on AA, including changing dates, as they will do that for you versus them having to refund your money. Work out what is the best for you, in terms of PRICE and routing, etc., and make your decision based on that.