Dieblo, those are not the best spanish bands. You have to probe with Avalanch <--- Very good guys, but they have changed the singer recently. The new singer is worse. Try with "El Llanto de un Heroe" and "El Angel Caido" its two best albums.
Another good guys are Easy Rider. They are very cool, and sing in english.
I dislike Mago de Oz and Tierra Santa. Its melodies are too simple for me.
yeah, I know the melodies are too simple, but they are catchy, about avalanch, I have noticed people that have mencioned them, but never heard them, any songs???