The Top 100 Metal Bands of UltimateMetal! Read for details.

1 - Carcass (UK)
2 - Cathedral (UK)
3 - Therion (SWE)
4 - Helloween (GER)
5 - Entombed (SWE)
6 - Katatonia (SWE)
7 - Opeth (SWE)
8 - Black Sabbath (UK)
9 - Accept (GER)
10 - Iron Maiden (UK)
 
here goes my top 10 metal bands:

1. Amorphis
2. Opeth
3. Apocalyptica
4. In Flames
5. Children Of Bodom
6. Dark Tranquillity
7. At The Gates
8. Moonsorrow
9. Metallica
10. Insomnium
 
Pantera
Metallica
Machine Head
Down
The Haunted
In Flames
Strapping Young Lad
Hatebreed
Sepultura
Testament
 
1. Testament
2. Slayer
3. Iced Earth
4. Anthrax
5. Iron Maiden
6. Soilwork
7. Blind Guardian
8. Megadeth
9. Emperor
10. In Flames
 
1. Katatonia
2. Diabolical Masquerade
3. Bloodbath
4. October Tide
5. My Dying Bride
6. Opeth
7. Candlemass
8. Primordial
9. Anathema
10. Finntroll
 
1. Iron Maiden
2. Dissection
3. At The Gates
4. Dark Tranquillity
5. Agalloch
6. Amon Amarth
7. In Flames
8. Deströyer 666
9. Nevermore
10. Opeth
 
1. Agalloch
2. At the Gates
3. Katatonia
4. Burzum
5. Bathory
6. Ulver
7. Dark Tranquillity
8. Darkthrone
9. Tiamat
10. Skepticism

Stuff like this is always hard. Ask me in another month and this might be quite different.