In my experience the only bands I haven't been disappointed with live are bands of the Grind and Extreme Death Metal persuasion. They don't fuck around with stupid tricks in the studio, or hire a 100 piece orchestra, or get that bitch from cradle of filth to sing frilly opera parts over the top. When you see a band like Waco Jesus, Hate Eternal, Nile, Devolved, Dying Fetus etc, you can be assured that you'll be seeing a tip top performance. Wheeeeeeeeeeeeeeeeee.