In case anyone is wondering if E-Wings are worthwhile, I thought I'd share my experience.
My friend and I got two games in today and we switched sides so each of us got to play both sides. During the first game I played Imperials and had a hell of a time trying to take Corran down in his E-wing. I finally got him just before cracking Luke with Mauler, but man was he a beast. My friend used Corran's ability to perform two attacks in a turn rather well much to the dismay to my fleet. I ended up winning that match due to lucky dice rolls with Mauler to destroy Luke and Corran both, which I found rather hilarious, but in that game Corran was responisble for taking out my bomber and an interceptor.
The second game I was Rebels and Corran shined again. I put R2D2 with Corran and ended up lasting the whole game with him, though just barely. And again, Corran's ability to do two attacks in one round was beneficial to keeping up with my friend. I was vastly outgunned in the match, but ended up playing to a draw, largely to Corran.
So granted it was only two games, but I am glad that I got an E-Wing because it really shined in these two games. And I personally think the loss of a hull point over gaining an extra shiled and agility is worth it over going with an X-wing.