[VIDEO]http://www.youtube.com/watch?v=pPYpZHLq2fM]Witchery Plague Rider - YouTube[/VIDEO]
I listen to shit tons of Witchery. There is a thread on "None Buried Deeper" from a while back. Some of their stuff is pretty much thrash hair metal with blackened vocals, if you dig the newest album, which is pretty straight forwards balls to the wall thrash, you should get Onslaught's "The Sounds of Violence", since the two are really similar.
[VIDEO]http://www.youtube.com/watch?v=FRGTrHR9Tcg]Onslaught - The Sound Of Violence - YouTube[/VIDEO]
If you dig the old stuff pick up The Crown's "Deathrace King" and "Crowned Unholy/Crowned In Terror".