I always liked Therion more than Symphony X. Mainly because of the vocals. Therion have insanely awesome vocalists. They're also pretentious enough to mark lietmotifs on their lyrics sheets. I mean, come on!
Therion - Three Ships of Berik pt.1: The Calling to Arms and Fighting the Battle
This track is so worth it because of the way the introduction makes it explicit that they identify themselves as spiritual descendents of the 'Gothic spirit':
"Gather all the Gothic tribes, all the sons of Berik
On three ships you sail away...on a pagan crusade!
Tyrants of the christian world fear you more than their God
Theoderik, gothic King: "Gog iste gothus est“
The flashing spear of the sublime
Is flying in the air
Like the fear of the divine
The goths are everywhere!"
Oooh, and now it's Therion - Carmina Burana.
Jeez I love this version.