Bands I already know of:
Adagio
Andromeda
Arcturus
Conception
Cynic
Devin Townsend
Dream Theater
Evergrey
Fates Warning
GB Arts
Ice Age
Lemur Voice
Majestic
Missa Mercuria
Pagan's Mind
Queensryche
Savatage
Spiral Architect
Sun Caged
Symphony X
Symphorce
Talamasca
Time Requiem
Vanden Plas
Vanishing Point
Wolverine
Zero Hour
There may be more that I'm forgetting. Anyway, recommend away.
Adagio
Andromeda
Arcturus
Conception
Cynic
Devin Townsend
Dream Theater
Evergrey
Fates Warning
GB Arts
Ice Age
Lemur Voice
Majestic
Missa Mercuria
Pagan's Mind
Queensryche
Savatage
Spiral Architect
Sun Caged
Symphony X
Symphorce
Talamasca
Time Requiem
Vanden Plas
Vanishing Point
Wolverine
Zero Hour
There may be more that I'm forgetting. Anyway, recommend away.