They're good on both and I appreciate both, but if they're going to be mixed on a song they must complement each other perfectly (Like in Misunderstood, ANtR, ACOS, Octavarium, Innocence Faded, etc). Because if they don't they can ruin each other (The Technical/Instrumental part of Endless Sacrifice ruins the rest of the song IMO).
If they're apart, they're great. If they're together and fit perfectly, they're sublime.