Your top five vocals...

In no particular order...

Jonas Renkse (Katatonia)
Mikael Akerfeldt (Opeth)
Jari Maenpaa (Wintersun)
Paul Kuhr (November's Doom)
Aaron Stainthorpe (My Dying Bride)
 
Dan Swanö
Peter Tägtgren
Mikael Akerfeldt
Jonas Renkse
Maynard James Keenan

Can't forget Vintersorg either, 6 is better than 5. ;)
 
Clean:
Maynard James Keenan (Tool)
Daniel Gildenlow (Pain of Salvation)
Warrel Dane (Nevermore)
Mikael Akerfeldt (Opeth)
Vinny (Anathema)

Growls and such:

Mikael Akerfeldt (Opeth)
Peter Tagtgren (Hypocrisy)
Sonm (Forest Stream)
Jens Ryden (Naglfar)
Jonas Renkse on For Funerals to Come
 
1.Peter Tagtgren (Hypocrisy)
2.Travis Ryan (Cattle Decapitation)
3.Mikael Akerfeldt (Opeth)
4.Vincent Cavanagh (Anathema)
4.Jonas Renkse (Katatonia)
5.Carl McCoy (Fields of the Nephilim)
5.Joe Horvath (Circle of Dead Children)

:)
 
Bjork, Victoria Lloyd (claire voyant), Regina Sosinski (mira), Cristina Scabbia (Lacuna Coil)... yeah female vocals rock... and the only male Jonas Renkse...
edited... hee hee now it sounds correct
 
male:

1. Messiah Marcolin (Candlemass)
2. Jan Kenneth Transit (In The Woods)
3. Alan 'Nemtheanga' Averill (Primordial)
4. Big Boss (Root)
5. Mike Akerfeldt (Opeth)

+ Kobi Farhi (Orphaned Land), Jonas Renkse, Warrel Dane (Nevermore)


female:

1. Agnete Kierkevaag (Madder Mortem)
2. Gunnhild Sundli (Gåte)
3. Vibeke Stene (Tristania)
4. Anneke van Giersbergen (The Gathering)
 
Jonas Renkse on Dance of december souls:worship:
Lisa Gerrard(Dead can dance):worship:
Cadaveria(Opera IX)
Bjork
Anneke van Giersbergen(The gathering)