I was a big fan of the New. Hopefully will get to see it again next year and reset my mental pics of it.
I remember the Jubilee being very difficult, and fair. I think it has a nice place in the four courses, as the Old is pretty wide, the New playable, the Eden shortish....so there is a need for a ball-buster like the Jubilee.
Not that I would choose it over Kingsbarns or a jaunt to Carnoustie or some of the other fun courses in the area, but if you want to stay on-site, the Jubilee is a must-play.