Hmm, I've often refused to use the anniversary concerts as an introduction because they're so static and cut down that I don't find the story clear enough or the staging exciting enough. I always want people to have the same Wow factor I had when I first saw it. To be honest, I prefer to introduce them to the show live. My boyfriend for example, was not allowed to watch or listen to any version of the show until I dragged him to London
But I know that's not always an option!
I would probably use the movie because it explains the story reasonably well, and back it up with a good recording for the bits it misses/changes and for better singers.
(I guess one of the best examples of video footwear might be an option too, you can probably guess which I'd recommend for that but if not you know where I am)
After I took my boyfriend, he asked me to recommend a CD version on the train home so he could listen to it further. I insisted on making a mixtape version of it for him, because it's so difficult to choose between the recordings for me. So I made him one with an ideal recording cast of Wilkinson, Quast, Henshall, Ball, Caine, (can't remember who I chose as Éponine actually), Warlow, Armstrong and Galloway. Always good to reinforce their new found fandom with something