> http://www.youtube.com ...
seems more like your basic scream grunge to me ... like the neighbor kids do until someone call's the cops on them 
I'm not aware of the genre "scream grunge", although there is "post-grunge," which is a terrible and therefore popular genre (Nickelback, Theory of a Deadman, etc.)
If anything, dark electro vocals tend to sound like black metal vocals, black metal of course being very different from any kind of grunge
(No not by me - I'm just as guilty of overamping, but certainly not of screaming like a deranged banshee from pluto's underworld)
I don't really see the difference between some of the sounds used by Kraftwerk and harsh vocals
If amplified and tweaked a little, for example, the monologues
The Voice of Energy and
Uranium from
Radioactivity would certainly qualify as instances of harsh vocals, as would the German voice in
Numbers from
Computer WorldEINS ZWEI DREI VIER FÜNF SECHS SIEBEN ACHT ... what is he counting anyway?
In any case, this song
Morphine is really about a person dying of inoperable stage IV cancer who desires an increasingly high dose of morphine
Regardless, if that's not your style, here's an example of music I like with clean vox:
http://www.youtube.com/watch?v=o2q6gQkYkaQVNV Nation -
Carbon