How fast will you be going when you plan on using the lights?
Foreground light like floodlights produce is fine for slow-speed driving. But it's not good for highway use or foul weather ------ on the highway it will constrict your pupils and ruin your distant vision and in foul weather a floodlight will illuminate the rain/fog/snow above your hoodline and create a massive halo that you'll stare
at rather than
through.
Very foul weather requires a real foglight, wide pattern, aimed low ---- and a judicious application of the skinny pedal.
For highway use stick with an appropriately patterned auxiliary highbeam or driving light like the Hella Rallye 4000 Euro that I mentioned. Or a Cibie. Or any other quality driving light.
You can even make your own by sourcing a highbeam lamp and fitting it in a bucket ---- works great.
And, of course, rig it to come on only with your highbeams so that it's easily defeated.
For slow-speed driving in clear weather, I haven't tested anything better than the cheap-n-stinky Chinese HIDs. I've seen them for $30/pair at Ollie's and other discount warehouse places. 7" godlights. Stinkloads of light.
Again, counter-productive in very foul weather.
Retrofitting an HID burner into a lamp that's designed for a halogen burner produces inconsistent results. You usually won't wind up with a light that's good for highway use. And real HIDs are so cheap right now, why would you want to do this?
As for my testing protocols, I'm never paid for testing a light. In fact, I'm several hundred dollars in the hole from testing; a fact that my wife constantly holds over my head.
I often receive prototypes that I give back or production units that I either give to the person who donated their time/vehicle for the test, to a retailer in the area to showcase on their own vehicle, or to SOLAROS (our local Land Rover club) for their annual charity auction to benefit Habitat for Humanity. Trucklite, JW Speaker, & Optima have been very generous with their charitable contributions to that event.
I work in a test & measurement environment and my ethical code is consistent. If a product passes, it passes. If it fails, it fails. If one product is superior to another in a measurable way, I state it.
I try my best to keep my opinions separate from data. And I have opinions about lights. I like LED headlights better than
HID for a variety of personal reasons even though the KIT from SMS runs circles around every other headlight I've tested.
That's where preference comes into play...