Rammstein sounds good live (at least on their Live aus Berlin album). And Apocalyptica is amazing live (i've already witnessed them twice). Godly, really.
killswitch engage is very good live. alot of energy from the whole band. the guitarists are on their shit perfectly while jumping and headbanging around the stage.
I have seen DT play live too . Fucking best konzert I've ever been to.
Some other great ones I've been to were all the konzerts I've been to (meaining: Mago de Oz, Therion, Dismember, Behemoth, Kretor, Hammerfall, DT , Apocalyptica and Destruction).
There is only one that I didn't like: Helloween.
Ah well I can't complain, lots of bands have come here, which is actually qiuite amazing considering the siza of my country.