I used to have a huge music collection years ago, almost 2000 CD's. I sold nearly all of them off to make way for our growing daughters who needed separate rooms. And besides, it was just cumbersome. Almost a burden having all of them!
These days, I still listen to all of the 70's, 80's and 90's metal acts as well as some great new bands that have come around in the 2000's and newer. Judas Priest, AC/DC, Dokken, Cinderela, Twisted Sister, Black Sabbath, Blue Oyster Cult, Metallica, Megadeth, Scorpions, etc. Iron Maiden is my favorite band of all time!
As for newer music & bands, these are some of my absolute favorites.
Ghost: Check out the tracks Square Hammer, Ritual, Dance Mabre & Cirice.
In This Moment: Check out Whore, Black Wedding and Call Me.
Halestorm: Check out Freak Like Me, I Get Off, Love Bites and Here's to Us.
Stone Sour: Check out Through the Glass, Knievel has Landed, Tired and Bother.
Those are just some of my favorite songs by these bands. They are also phenomenal to see live!