1. Dick Grayson--the first, the greatest, and honestly the one who should still be rocking the red and green (it's HIS identity, much more than Nightwing--which he got from Superman of all people).
2. Damian. I didn't want to like this little punk, but he's grown on me a lot.
3. Stephanie. Cute and plucky but also tough.
4. Carrie. In over her head but game for anything.
I've never liked Tim (I just feel like DC tried too hard to make him seem worthy and likable after the train wreck that was Jason), and Jason is much better as the Red Hood.