We use EWR also, and I have found since shopping around for our March trip that the prices went from 199, to 119, to 79, to now 69 each way(this all within a 2 month period). Booked at the $79 rate-then it went on sale, so they give you a credit that you get to use towards a booking within a year. I would give them a try, and the plus is that you get your own direct tv screen at every seat.
Continental was next in line at $86 each way-but their price never changed at all. And I haven't been a fan of Continental for a few years now, and really didn't want to travel with them anyway.
ANYWAY, IMHO..wait out JetBlue-They always have great sales. They just started daily service out of EWR in October I think. Also, JetBlue is part of the luggage pick up service for Disney..definately a bonus!
GOOD LUCK