Evanescence is not really a symphonic metal band.
Within temptation is symphonic metal/rock.
One of the best purely symphonic metal bands I know is Wintersun, their composition of music is breathtaking.
'Consciousness is not simply a sensory-perceptual affair, a matter of mental imagery, as the contents of our mind would have us believe. It is deeply enmeshed with the brain mechanisms that automatically promote action readiness' - Jaak Panksepp