The appendices are great, more than 9 hours. Lot's of great stuff there.
The EE is my least favourite EE of the 4 Middle-earth movies so far, there's some good stuff (Bilbo in Rivendell and the extended Gandalf and Elrond conversation before going to the white council, the market scene) but there's some cringworthy scenes (the dwarves bathing in the fountain, goblin town song, it reminded me of the awful Jedi rocks song in ROTJ special editions and the editing of some the scenes are very badly done, Peter should fired that Jabez Olssen guy and bring back the FOTR or TT editors )
I wished they had included the High Fells scenes in the EE, i still wonder where they will put that scene in DOS