[twic]

Surely Nightwish are the paradigmatic example?

[RajT88]

And here we are arguing about subgenres and band classifications. I knew we'd get here!

Nightwish is a good fit except the "power" part.

[int_19h]

Early Nightwish releases were consistently classified as sympho power metal, so I'd say there's a consensus there. Sometimes people threw around more complicated labels like sympho-speed/power.