the extended version is the same movie you saw in the theater with all the deleted scenes put back in,the ADM special edition is the same movie,with deleted scenes and a NICE ADM editing job,example,taking the midichlorians talk out,lower the voice of the droids,cutting out useless stuff,shortening vaders "Noooooooooooooo"and the sweetest thing adding Qui Gonn into the film(voice only)and as far as menu's,i think ADM keeps them this way to save room on the disc for all the important stuff,i personally like HIS menu's very much,short and sweet and to the point,dont need anything more than that,in my opinion,i could be wrong on why ADM makes his menu's that way,but i am sure he will tell us when he reads his thread.
and the SL and DL versions are already on there way out to everyone
DJ