Up until Airtran started offering non-stop flights, I only flew on Jet Blue. Love them! But we have been using Airtran for several years now, no problems. I do miss the roomier leather seats. I'm not a great flyer, so I tend to pick up on little things. A plus for Airtran planes, they are much quieter. Engine noise doesn't seem so bad to me...
I'm sure it will be fine..have a great trip!!