Considering both int the 70's and early 80's (since then I don't like their music so much), I voted TD, because although I like KS music, TD has more varied albums.
What they were doing:
Early 70's Obscure and cosmic experimentations the same experimentations
Mid 70' Pure Berlin School of Electronic (Voyages) the same, pure Berlin School
Late 70's Progressive electronic Pure and absolute Berlin School.
Early 80's Atmospheric Photomural Music ;) Rubbish? (for me of course)
KS music in the seventies is like standing on a desvastated planet watching a life form putting light spheres in space which it found on the red sand . . .
TD in the seventies is like a kid falling asleep after school and having a very strange dream, waking up and finding the nightmare is not over, all over again and again and again . .
love them both, actually