For me, my favorites has got to be:
Mai HiME 8, 12, 14, 15, 20, 24, 25, 26
Mai Otome 1, 10, and possibly 13 (hurry up and finish downloading!
)
Mai Otome is not doing it for me as much as Mai HiME was. I really hope Mai Otome will get better once the dark plot comes.