Keith Giffen and J.M. DeMatteis on Booster Gold. Great!
Brightest Day. OK.
Judd Winick and Giffen on Generation Lost (Justice League International) depends very much on which Judd we get. The guy who wrote The Outsiders, Green Arrow/Black Canary or the guy who brought us Barry Ween, Boy Genius.
I'm gonna say the guy who writes the fair-to-middlin' or "who-the-f***-who-let-you-in" superhero comics.
Maybe I'll be proven wrong but the man who brought comics The Scarebeast hasn't done so in a very long while.