Not a very well known band, but i think theyre awesome. I want to get them slightly more known
http://www.myspace.com/thaurorodtheband
Also, theyve probably been said before but i haven't read every post, but Twilightning are an awesome Power metal band (with an 80s influence)
My Twilightning Myspace Fanpage
..and others that have probably also been said:
Nocturnal Rites
Firewind
Warmen
HammerFall
Altaria
Thundercross
Power Quest (not very 'dark')
Aquaria (also not 'dark'.. and symphonic too)
Sonata Arctica
Sabaton
Pyramaze
Edguy
Stratovarius
Dream Evil
Dragonland
Concerto Moon (kind of Neo-Classical)
Avantasia
Angra (also symphonic)