Finally did some testing tonight
All bulbs other than the stock sealed beam were in a Kyoto shell ie from an XS1100 or some such. The H4 type reflector with these bulbs all fit in the stock XS shell but the "best" LED has a long rear section and was a shove to fit, I will change wires and get rid of the black plastic headlight connector which should give me a bit more room. I was hand shooting, so my camera position was not consistent.
In picture order; low beam, then high beam on each bulb type.
#1 is a 55/60 watt H4 halogen
#2 stock sealed beam
#3 The cheapest LED ( on right in last pic )
#4 The "better LED"
The better LED out on the road. This LED lights only the top half of the reflector, the single LED element is on the top of the bulb, so the shell needs to be aimed higher, I moved the shell up but it still needs to go up more. I am impressed with how even the light is below the cut off, a broad area has full even lighting.
Really hot weather is gone til next year but I'll do some temp testing of the shell reflector also.
1st pic; "better" on left, "scatter gun" on right it just has LEDs stuck on everywhere iincluding one behind a lens, pointing forward kind of a projector.
second pic shows depth of the rear of the bulb that sticks back in shell compared with halogen on left
Both the LEDs were cheap on ebay about $3.00 each shipped! I will run the middle one in the resto mod, see how it holds up.
Walked in front of these and that cheap bulb was a glare monster on either bright or dim, the Better one caused much less glare, the bottom half of the reflector is not bright at all.
RG yes, I still have the original mechanical regulator and that 55/60 halogen was really pulling my voltage down at idle, even after a new battery last month. The LEDs give a nice idle voltage bump, nearly a volt increase. Above 2500 RPM they all stabilized at 13.5 volts. While messing with a "cigarette pack" lithium ion battery test rig to feed headlights it was barely able to fire the halogens, quite dim. but the LEDs put out "full" brightness.
I have a digital ammeter "kit", will post up "actual" bulb wattage results, and do some other load "snooping" when I find the darned thing again.