Yeah, there are quite a few bands I listen to... In comparison to before anyway. (Metallica, Megadeth, RED, Demon Hunter, Rage Agains the Machine, Anthrax, Jusdas Priest, Machine Head, Thousand Foot Krutch, Three Days Grace, System of a Down, Led Zepplin, and probably some others that I'm forgetting right now.
Megadeth is a great band, though I haven't listened to enough of their music to say they're one of my favorites.
But Machine Head... I love that band. I like Bloodstone and Diamonds the most. It just had the most songs that I love. But Locust, Darkness Within and Halo are Great songs too.