This wasn't an option but now it is: the Dutch band DeLain 1) Their lead singer(Charlotte Wessels) is a babe, 2) She has an amazing voice, 3) I love their sound therefore you will too and 4) Did I mention the lead singer was hot?
Actually I'd like to revise my answer or add to it. The Finnish band Nightwish and the Swedish band Therion, as you probably know symphonic metal is big there.
The Finnish for sure. Not only are the Finnish cooler their rock bands go all out like Lordi.
Swedish dude, swedish! do you even have to ask?