eemsreno makes a good point regarding the vision issue when driving with lowbeams. Depending on how crisp the light cutoff is with a light (think defined edge), they can be positioned to give great light down low and spread side to side but cut off low enough as to not blind oncoming traffic. Projector lights have that type of crisp edge, but the issue I've found with that is motorcycle suspension moves the bike (and headlight path) around a lot more which allows the intense light, that is normally below traffics view, to jump up and blast them with light. This was made clear when my wife would follow me on here BMW F650CS (not GS). The CS has a projector light for the low beam...and honestly, it drove me nuts! Every time she would hit a bump or crack open the throttle then let off, I thought she was flashing me to stop because something was wrong. I was constantly snapping my bike's throttle closed when I would see that in my rearview mirror. Glad that bike is sold and gone if only because of that. Ha.
I don't know if LED lights have near that same kind of defined edge to them. That would be interesting to know so one could consider what eemsreno said. Using the LED at 100% brightness, but pointed down enough that they function more light really bright lowbeams. But then you would be lacking highbeam light thrown further down the road. The solution, of course would be to have four lights. Two adjusted for lowbeam use (though it would make sense to leave them on for both low and high beam) and two lights adjusted for high beam use only. Good backwards segue to Wasp's post about a 4 LED light bar. Now we are getting pricey with 4 lights, though, so one would have to evaluate if one does enough night riding to justify it. Maybe just 3 lights? The price savings of buying the square LED over the newer round Prime LED plus NOT having to buy a dimmer saves a fair amount of money that could go towards a third square LED and that could be your center light that comes on only with the high beam while the two outer LED could be angled lower and be on all the time. Just thought I'd throw one or two more options out there. Since we all were already having trouble deciding on a setup, why not add a few more things to consider.
