The difference between Euro headlights and normal ones, is the European headlights have a better reflector and beam pattern than american headlights.
In 1994 Mercedes US Headlights became much more similar to the European Code for headlights as US DOT Laws for headlights changed to suit the better visibility of European headlights.
On your car, a 95 280C, it should already have good updated style headlights.
The lights people mostly change to European Code Lights are 124, 126, 123, and other chassis. The Newer style cars have much better lights.
As anyone with a 124 knows, the American Headlights just plain suck.
'92 300CE - Sold
2004 C240 - C7 Wheels
2015 ML350 - P1, Pano, Ash poplar wood, Sport Dinamica interior, Running Boards Keyless go.