c4 + IL was the best for me, that's because I have all those memories as a newbie who just started playing the game with his friends.
But the game it's still evolving, and the big plus of the latest chronicles is the balance between classes. SO I had my share of fun on every chronicle, and yea.. I'll play this game till the end of it.
Sure, the feeling might've changed meanwhile, but the game it's still good and I wouldn't play any other MMO besides L2.