Nigerian leaders: Past and present; who's your best and worst?

From top left: Yakubu Gowon, Ernest Shonekan, Murtala Mohammed, Umar Musa Yar'Adua, Ahmadu Bello, Goodluck Jonathan, Olusegun Obasanjo, Ibrahim Babangida, Nnamdi Azikiwe, Sani Abacha and Muhammadu Buhari.

Rate them from 1 to 11. And if your favorite and worst isn't listed here, just name them...