I have never flown JetBlue before, but I've heard positive things about them from this board. I believe they are consistently on time. If someone has had a negative experience with them, please share.
I wanted to try them, and this trip seemed to be the best in all regards. For one, the other non-stop airfares on that day (Nov. 21st) from JFK were at least $100 more. Also, I wanted to fly out of JFK and not LGA, because I can't imagine how much more inefficient LGA would be during a holiday (any other time it's a 50-50 bet).
But, if I were you, I'd stay with flying out of EWR. I live in Queens, and EWR is not at all convenient for me. Everyone seems happy with Continental.
Donna