I saw their DELIRIUM show when it came to Glasgow in April this year (the first time it's been in Glasgow......EVER) and yes the tickets were a bit pricey (185 GBP for 3) but it was something that I always wanted to see and I have to say that it was worth it. Words can't describe how it was to see live...I mean on TV is spectacular but until you see it live...it's breathtaking.
Crossing my fingers for further ones to come to Glasgow (cause london's just a tad too far and a tad too expensive
If you want to see a clip of it to see if it's your cup of tea, you can see a clip on the
official site