I think their Death Metal Demo, Helloween EP, Walls of Jericho and Keeper of the Seven Keys Part I & II are absolutely brilliant, but nothing after Keeper Part II have managed to grab my attention. I do prefer their Death Metal Demo, Helloween EP and Walls of Jericho to Keeper Part I & II tho. More speed than power metal, and both rougher and rawer. But both Keeper albums are superb as well.