I went the Hella route. Got them used from a member of this site.
Added a set of Silverstar bulbs and never looked back.
They are as bright as anything else out there short of the newest Xenon stuff.
Keep in mind, it is illegal to add HID bulbs to regular reflectors. While odds of getting caught and fined are slim, it is blinding to oncoming drivers as the lens is not designed to focus that type of bulb.
Just get some elipsoids or Hellas and some good bulbs, you will be more than happy. Sealed beams should have not been allowed to be used, they are scary. Pretty sad when an 87' Nissan Sentra (one of the cheapest cars that year) with faded plastic lenses puts out more light than your BMW lights.
I think I have $130 invested in my headlights and they rock.
By the way, with Hellas (not sure with elips.), you DO NOT need a wire kit or adapters.
If you look on your connector you will see a slot, shove a thin screwdriver in there, the plastic slides off, leaving blade connectors, which are used on the new lamps (high beam lights only if I remember right).
Shove the plastic in a drawer for safe keeping.