Which Muslim country will Obama visit first?

In his interview with Al Arabiya television, Barack Obama renewed his pledge to make a speech in a major Muslim nation.

I've been guessing recently as to which country that will be. The current stakes are:

Indonesia 5/4 Favourite

(he was partly brought up there, he speaks Indonesian, it is the world's most populous Muslim nation and Ben Smith says that he told supporters in 2007 that he would visit Jakarta first in his presidency).

Egypt 6/1

Morocco 8/1

Jordan 15/1

Saudi Arabia 30/1