Somebody correct me if I am wrong but I believe that the E in both models that you are referring to stands for Europe. If you want a PAL camera than that's what you will be getting in all its 25p frame rate glory.
However, the "AE" model verses just the E model would be the same differences as the DVX100 and DVX100A, meaning no squeeze mode, and an inferior zoom ring, among other things. Please GOD correct me if I am wrong but I think those are the differences.