Good point. One of my favorite "lights of the past" (still have a brand new pair in storage) was Cibie 5-3/4" curved lens H1 high beam. It put out a heck of a "spot" but still had enough ribbing in the lens to give some "spread" on either side. Worked great with the curved lens H4 High-Low lamps.
I see a lot of positive reviews -- or maybe I should say brags -- on the motorcycle forums, about their HID conversions. These range from the VVME.com super cheapo jobs, through the expensive genuine Philips bulb kits here:
http://www.kbcarstuff.com/Xtreme_HID_Kits_Digital_HID_Quality_Proven_since_2001_s/21.htm
and on to the stuff at futurevisionhid.com -- which ranges from conversions to an actual engineered motorcycle HID projector headlight with Philips HID
http://www.futurevisionhid.com/prod...s/h6024-bi-xenon-projector-headlight-kit.html
But the conversion posts I see that have before/after pictures and show the beam shining on a wall, always seem to have more light above the cutoff level of the low beam.
I know riders talk a lot about "conspicuity" and worry about being seen. Hell, some of 'em even ride on high beam in the daytime. But I need something that actually works on foggy nights. And the last thing I want to do is blind an approaching truck on one of those nights.
Maybe it's a good thing I can't afford an HID conversion. At least I got a voltmeter mounted. If it turns out I can carry a pair of 55 watt driving lights without flattening the system, I'll have some options (as far as I know, 35 watt halogen bulbs are only available in H3). I have a number of H2 lights, even that pair of H1 high beams, if I can find cheap buckets.
The bike has good coverage; I just want more reach on those long dark straight stretches.
The Philips X-treme Power bulbs are only available in the bulbs with physically large capsules -- H4, H7, H13, etc. not in H3, H1 or H2. But I plan to use 'em where I can.
When I can afford it, a pair of good HID auxiliaries (42 watts in, for a 35 watt light) still seems to ulimate best option.