I think Therion is an excellent band, even though I haven't listened to them in while. Christofer Johnsson really knows how to create powerful and symphonic metal. I saw them live once and was amazed by the way they managed to create a descent sound compared to the huge arrangements used on the recordings of the albums. In addtion to the band, they used only a keyboard player and a choir consisting of 3 male and 3 female singers. And man it sounded good.
Therion rules... but maybe the've lost some of the feeling they use to have years ago.
But i think... therion SUX big time live. Why??.. becose its like listening to the album. They use a pre-recorded orquesta... so they can't improvise. At least, for me, i like when a band gives you a great suprise while on the stage.