Originally Posted by Two Moto Kiwis
In the thick fog I used low beam only without the LEDs as it was too bright from reflection but in the deep dead of the dark they parform outstandingly well.
I have the Dually 4 LED version and love 'em. Also have the amber, clip-on filter things, which work a treat. Dramatically overpriced, but make a world of difference in fog or dust.