I've got a PAL copy of version 1.0 of redux lying around somewhere on dvd. But it's quite a while ago I watched it. I'll look it up.
If memory serves me right, the redux version mimics Moroders version als close as possible. Maybe with a little less colour bleed in the multicolour shots. It also uses different takes for certain parts of the movie because the later restoration used some different takes than Moroder did.
Edit: I just found this on Youtube. http://www.youtube.com/watch?v=sEA4bNWkHJE It shows some of the changes made for redux.