It really depends what you want the lamps to light up for you. I have my lights set up to help me avoid critters, both at higher speeds on backcountry highways, and on the trail. I had also felt like my headlamps just didn't light up enough for me on the trail at night, I often had to get out of the Jeep to look at some obstacle, or to see what the heck was behind me (which I still do...). On the KJ's roof rack I have four 500s with the driving lens and reflector, and Sylvania 100w bulbs. They're each mounted about a lamps distance apart, but the center two are mounted about two inches higher than the outer pair. I have the center pair pointed so the bottom of their beams meet the top end of my brights' beams, and the outer pair pointed to be even vertically with the brights and towards the outside where the brights’ beams weaken horizontally. From the driver's seat, the beam pattern with just the basket lights on is an upside-down U shape that easily goes further and produces more light overall than my headlights/brights. I can see fine on the trail with just the four Hellas, but I obviously like to see a lot of detail directly in front of the Jeep, which is what the headlights and fogs help. The outer pair of 500s tend to point in ditches when I'm on the backcountry roads I frequent. This definitely helps me avoid elk and deer, my biggest concern when going 65 MPH in the middle of nowhere.
I'm a stickler about having my lights pointed correctly
, I'm not sure why but they don't seem to put out enough light. with the diffuser they seem to be more of a pencil beam, than a spot, i have seen the lightforce in action (every trucker in the North uses them) they work very well
