I can't really separate a top 5, but my top list would be:
Beardfish
Cacophony
Delain
DGM
Dream Theater
Dredg
Explorers Club
Fuel
Glass Hammer
John Petrucci
Jordan Rudess
Liquid Tension Experiment
Lacuna Coil
Masterplan
Metallica
Nick Cave & The Bad Seeds
Nightwish
Oceansize
Pink Floyd
Porcupine Tree
Rush
Silverchair
Spock's Beard
Symphony X
Twilight Guardians
Within Temptation
Wolfmother
So far Kramer5150's my closest match
Beardfish
Cacophony
Delain
DGM
Dream Theater
Dredg
Explorers Club
Fuel
Glass Hammer
John Petrucci
Jordan Rudess
Liquid Tension Experiment
Lacuna Coil
Masterplan
Metallica
Nick Cave & The Bad Seeds
Nightwish
Oceansize
Pink Floyd
Porcupine Tree
Rush
Silverchair
Spock's Beard
Symphony X
Twilight Guardians
Within Temptation
Wolfmother
So far Kramer5150's my closest match