Put simply - it was a pretty big difference. The first time I saw the play, I was impressed by the level of intensity brought to the performance. This time, it was the level of sympathy that surprised me - even knowing everything the creature was going to get up to I found myself nervous about how exactly this creature would do things.
From a critical standpoint this time I got to watch how they did things rather than just what they did. The set was pretty incredible and the overall acting was superb.
If a DVD of this play comes out, I would love to purchase it, but even if the only way I get to experience this show was the way I did, I'm glad I saw it both times. It was a really, really great show.