Originally Posted by eulogy508

you probably could have dug up a few old threads about this, but whatever....

Yeah, I've said it before that undertow and opiate have a more bass-driven feel, and have more heavy guitar riffs than solo-ish interludes. aenima and lateralus have bass with delay effects, the music is a bit more experimental (espiecially so on lateralus) and they don't focus as much on heavy guitar riffs.