I think too cost would be a factor, generally speaking west end tickets are cheaper and the theatre is smaller so you would get a better view. etc. The cheaper tickets at the Majestic up at the back are very far far away.
That being said, personally, I prefer the Broadway version because everything is just a little bit bigger and breathes better in the Majestic where as in London it can feel rather crammed in at Her Majesty's.
Physically, Phantom, but Musically for me anyways it would be Sunset and Evita. But, I do like how in his earlier works the flow is made up of song, song, song, rather than music flowing from one song to another.
Not that it was asked, but my least favourite would be Aspects of Love, his connecting music there is just so bizarre at times. Also I've never listened to Starlight or Jeves
That video is definately the london revival. Personally I loved the projection combo. the projection shows the chopper flying in really fast. and at first I thought, dam, no helicopter, then the drop flies out and there it is, to me it worked very well.
I also remember being under the stage at a drury lane theatre tour when they were having a rehearsal above, we just happened to be there in the helicopter scene and the sound effects under the stage were deafening.