Always have been a long time heavymetal listener even now at the age of52 and know that I will until I die I love Pandora and the music is the **ahem** some of my favorite bands are five finger death punch sepultura slayer and older metallica
Not all are necessarily speed metal, but I would add:
Oh.. I would add Testament too.
@nomadlives No KISS! I would also have to mention Led Zeppelin if only for two of their songs, Stairway To Heaven and Moby Dic*, I would even have to say Misty Mountain Hop as well, so three, not two. Great post by the way.
Take care and stay safe.