Wild Dogs - Reign of Terror
Sortilege - Metamorphose
Agent Steel - Skeptics Apocalypse
Blind Vengeance - S/T
Thin Lizzy - Thunder & Lightning
Destructor - Maximum Destruction
Mortal Sin - Mayhemic Destruction
Motorhead - Another Perfect Day
Omen - Battle Cry
Exciter - Long Live the Loud
Overdrive - Swords and Axes
Tokyo Blade - Midnight Rendezvous
Slayer - Show No Mercy
Yngwie Malmsteen - Rising Force
Holy Terror - Terror and Submission
Lizzy Borden - Love her to pieces
Gillan - Future Shock

just a few that I didn't see mentioned yet. could go on for much longer.
I remember picking up Iron Maiden - Killer - first cassette purchase and to this day still my number one album. Mercyful Fate - Don't Break the Oath, Slayer - Show No Mercy, Metallica - Ride the Lightning are numbers 2,3 and four. Wicked Angel, Evil Dead and The Legacy were bands that I got demos from and corresponded with. Awesome growing up in the eighties.