JetBlue is a little too loud because everyone had their headsets turned all the way up. (You can hear everything from the guy sitting in front of you). And passengers screamed at each other because they have their headphones on. DH doesn't watch TV, and can never sleep. We tried JetBlue 3 times, and everytime he just got angrier. I think he's the only guy in US who didn't like JetBlue.
Strange that on CO, people have headphones too, but you can't hear anything from the guy next to you.
CO from EWR will be a better choice, but it's $80 more expensive than the other 2.