I happen to have a set of Hella Projector Bixenons, retrofitted to my OEM housing. I have 0 problem with light scatter. The lght is bright and white with a very nice cut off. Back a few years ago there were no other housings available so I had to use the OEM. Although I have no complaints about mine if I were doing it now I would try to locate a better housing (if there is 1) and I would stay with the projectors!
my .02
low beam:
High beam: