ZKW quality is overall. The projectors are by far the best. If you want quality, ZKW is the only option. DEPOs are good too, but will most likely fog and the projectors are not the same quality.
Those, as you said, surely lack quality, and IMO the look isn't right either. The chrome backgrounds just don't fit on the e36. I have a photosop at home I will post of them if I cannot find the image in a search.
<span style='color:gray'><span style='font-family:Courier'>1995 e36 3 Series RIP
1999 e46 3 Series BURN IN HELL
2000 MR-S Roadster= Current</span></span>