I received and installed my E-code rectangulars over the weekend.

I imagine I see a significant improvement - the light seems to be whiter even
compared with the Wagner Brite Lights.  I like the low beam pattern better,
and the "city" lights are way cool (shades of split-screens).

I got the lights from PUMA in Ohio - 1-800-333-PUMA - brace yourselves - $350
a pair.  Idea:  I piggy-backed the necessary bulb connectors onto the wiring
harness without removing the 900x type sockets - just in case I ever needed to
go back.  I sealed the unused sockets with electrical tape to help preserve
the contact surfaces.

One problem - PUMA did not think or know to order the "seal" that covers the
back side of the reflector (after you install the H-4 bulb) - I expect to
acquire a pair of these, either through them or from another source - in the
meanwhile, I created a stand-in using closed cell foam sheet and wire ties.

-Blaine (euro-nut)