I totally agree with you that every mercedes is worth Hella or Bosch light units!!!
This only makes me wonder why mercedes changed their strategy and went shopping at Valeo for their C class head light units (amongst other parts)???
The W202 C class ("93-"00) in europe comes with Hella or Valeo head lights and the C220D(iesel)s came with Valeo fuel pumps (that broke, and still break, down a lot).
with a minor 600+k