If you want to fly, choose CVG. If you want to sit around and only fly a few hours a month, choose JFK. Of course it is all subject to change. JFK used to be short staffed when it first opened a few years ago and reserves were maxing out on flying. Now, they are fat on FO's there. It is all subject to change. A few months can make a huge difference. Base closures, new aircraft, loss of aircraft, additional flying, less flying. There are so many variables. But as of today at this very moment: CVG=fly; JFK=sit around.