If some is good, then more is better, and too much is just right. Just as you cannot have too much gasoline unless you are on fire, you cannot have too much light unless your alternator can't take it or oncoming drivers take offense with you. I originally had the Rigid Dually Spot beams working through a Clearwater IQ-170 pulse width modulation controller to provide 50% brilliance on low beam and 100% on high beam. Now I have a set of Rigid Dually D2 Driving beams taking their place on top operated through the IQ-170 and I re-mounted the Dually Spots below the D2's to operate only with high beam. The Spots have longer throw and a narrower beam than the D2 Driving lights. Again, with my coming post-op lay-up, I won't be able to test these for a couple of months. But here are a couple of pics...