I had a 63 plate Leon with Tech pack couple of years ago. Wouldn't say they were dim, much brighter than all Halogens I had previously. The car was new (ish) at the time though and the lenses were clear and dust free. Main beams with low beams raised were wow. Like the others, I had to use the screws to lift hte headlights so that they could shine a bit further in the distance. I parked about 10m from the wall, tapped where they were, and raised them ever so slightly..did the job, and nobody flashed me.