I think everything as been more or less "done" in this style by In Flames and more recently Raise Hell. Deep use a more brutal voice (always clear and not that much guttural) and is very catchy somehow. Overall it is an album "constructed" on two riffs (one heavy / trashy "à la Judas Priest" and one speedy "à la Running Wild").

After the third song it becomes heavier and heavier : not the music, the album itself becomes heavier and heavier to ... listen to it. I got the impression that same song was running ... in an ultra extension version. Potential is here, but hard work must be done first guys. Next !!!