Jet Blue is the best in my opinion. I will be using them 3 times this year. July to Aruba, August to Vegas, and the November to Disney.
I travel with 2 young kids so the TV's are great, yes you lose them going to aruba about 1.5 hours into the flight but that is no big deal. The name brand snacks are great, DD coffee, cookies, chips, all different stuff, and best all Free!!!
Just make sure you bring a headset with you on the plane, any standard headphones will work, like iPod ones.
I also have the Amex Jet Blue Card. I have a free R/T to Vegas, and tomorrow when my points post to my account, I will have a one-way to Vegas for free.
For me, even if the tickets are a few bucks more I will go with Jet Blue.
Another huge thing that is great with them....
If the price drops below your cost, call them and you will get a credit for the difference, good for use for one year. All that without a re-booking fee. I think that Continental charges like $100 to make changes.
I fly normally out of JFK, but I may fly out of White Plains for my trip to Disney. I will not have to fight the city traffic and it is closet to my house....