I have the adjusters on my 240D Euro lights and it is a valuable device for my particular situation. I drive 20 miles of narrow, winding, farm to market road just to get to the highway. I leave early in the morning, so always drive this stretch in darkness in the morning. In the Winter time I'm also driving this stretch of road in darkness on the return trip. The problem on this road is dilligently watching for deer and escaped livestock. The adjuster allows me to raise the headlights just a little when on this section of road, but I can still keep the lights out of the eyes of oncoming drivers when in town and on the highway. I love 'em.
Have a great day,