For right now it's:
Action Comics (may drop after Morrison)
Green Lantern Corps
Green Lantern New Guardians
I just dropped Batman & Robin and Batgirl now that the DotF arc has concluded. Neither had been setting my word alight for quite a while. I heard the Batman & Robin Annual was really good, though, so I may have to go back and pick that up.
I never heard anything about Johns leaving Aquaman. I know it was rumored after Reis left for Justice league, but that was debunked. I really hope he doesn't for a good long while. Johns has made me love the character.