What are some good Techno or Metal bands?

What are some good Metal (any kind, i prefer metal like Korn, Emmure, and Amon Amarth. Also what are some good Techno bands, I also like Electronica and Dance, so tell me some bands please, I like the Italobrothers, and Bhunter, so thats some of my techno taste, so give me some bands i might like, thank you.