Okay, it's been over a week, so I think it's time for a review.
Following on from a theme in a couple of other threads, it is blatantly clear to me now that festivals like Wacken pwn the shit out of everything that the UK has to offer, for a number of reasons: -
1) EVERYTHING is cheaper.
2) Arena is laid out in a way that you don't have to walk miles between everything.
3) Rotating policy involving 2 main stages means longer set times for more bands with less time waiting between sets.
4) Nicer and more varied food.
5) Free goodie bag including card game, pen, condom and water-proof poncho (THAT came in handy!)
6) Mud is covered over with wood chippings to stop the whole place turning into a swamp after rain (take note, Glastonbury!)
7) Given the more specialist nature of the festival, there is a much more united, welcoming atmosphere, decreasing the risk of fights and riots.
NO bands are bottled; relatively unpopular bands (like As I Lay Dying) are just seen as an excuse to head to the beer garden.
9) The aforementioned beer garden.
10) The Metal Market, where you can buy damn near everything at bargain basement prices.
I'm sure there are more reasons, but I think I've made my point 
Anyway, the music. I can't be arsed to comment on every band that I saw, so here's my top 10: -
1) Carcass
2) Avantasia
3) Iron Maiden
4) At the Gates
5) Opeth
6) Kreator
7) Children of Bodom
Airbourne
9) Mortal Sin (Great discovery!)
10) Nightwish
Cynic, Ensiferum, 3 Inches of Blood and Killswitch Engage are also worth a mention. Kamelot and Sonata Arctica were okay but kinda seemed like they were just going through the motions. And the least said about Lauren Harris and Exodus (God, their frontman's an arrogant prick!) the better!

one of the best stage shows
Seriously, the crowd went absolutely wild, can been seen from the footage of wacken 
