What is the best groove metal album of all time?

Groove metal took thrash's aggression and dialed back the tempo to lock into a heavy, irresistible groove — with Pantera, Sepultura, and Machine Head leading the charge. Which groove metal album hits hardest?

1. 1
   Vulgar Display of Power

   Pantera's 1992 album that defined groove metal with crushing mid-paced riffs and Phil Anselmo's aggressive vocal swagger.
2. 2
   Cowboys from Hell

   Pantera's 1990 major label debut that announced their transformation from glam to a ferocious new heavy metal force.
3. 3
   Far Beyond Driven

   Pantera's 1994 album that debuted at number one, pushing groove metal to its heaviest and most aggressive extreme.
4. 4
   Chaos A.D.

   Sepultura's 1993 album that fused thrash metal with groove and tribal rhythms, influenced by Max Cavalera's Brazilian heritage.
5. 5
   Burn My Eyes

   Machine Head's 1994 debut that established the Oakland band as a major force in groove metal with crushing rhythmic precision.
6. 6
   Astro-Creep: 2000

   White Zombie's 1995 industrial groove metal album featuring Rob Zombie's horror-influenced samples and massive riffs.
7. 7
   As the Palaces Burn

   Lamb of God's 2003 album that established them as the leaders of the new wave of American heavy metal groove.
8. 8
   Ashes of the Wake

   Lamb of God's 2004 concept album about the Iraq War, combining blistering riffs with socially charged lyrical content.
9. 9
   Slaughter in the Vatican

   Exhorder's 1990 debut that many credit as an early blueprint for groove metal, predating Pantera's mainstream breakthrough.
10. 10
    The Great Southern Trendkill

    Pantera's 1996 album showcasing Phil Anselmo's most experimental vocal work over some of Dimebag's most creative riffing.
11. 11
    Roots

    Sepultura's 1996 album that incorporated indigenous Xavante tribal music into a groundbreaking fusion of metal and world music.