What other bands are like Volbeat and Halestorm?

In This Moment is an awesome band, but they are not melodic/symphonic. They are far heavier and more electronic, too. http://en.wikipedia.org/wiki/In_This_Moment

Nightwish

Kamelot

Tristania

Stream Of Passion

Sahara Dust

Son Of Seasons

Leavin' Eyes

Lacuna Coil

Amberian Dawn

Therion

Within Temptation

Xandria

Delain

Mayan

Sirenia

Tarja

ReVamp

After Forever

Diabulus In Musica

Krypteria

Edenbridge

Midnattsol

Nemesea

Under The Flood and Parabelle come to mind. Both heavy but very melodic with incredible vocals from both bands.

Volbeat is more upbeat though, the bands I listed are probably a little dramatic in their lyrics. So they are probably very much more like Halestorm.

I would say In This Moment, or Evanescence c: ps halestorm is awesome ^-^

Blind Guardian.

http://www.youtube.com/watch?v=XTSouJI3Xqo

http://www.youtube.com/watch?v=bYdd4fMtW_A

http://www.youtube.com/watch?v=GNXSZOT597w