The Phantom 87 you see here (361.5 x 133.5 x 40.1 mm) and a full sized Phantom 104 RGB 444.5 x 133.5 x 40.1 mm). As you may have guessed the only difference is the 87 key layout vs. a more traditional 104 key layout. With the 87 you are giving up the traditional 10 key for...