An excellent power metal band who have a lot of speed, thrash and prog elements but still remain mainly a power metal band.
https://www.youtube.com/watch?v=wLmTsK3cepo
https://www.youtube.com/watch?v=Okek6fw4SuA&feature=related
https://www.youtube.com/watch?v=n_0Skx1BYus&feature=related
Excellent stuff.