I did have them and was really pleased. I probably detailed it in the post @Longwhitejeep linked to above. I had been running LEDs for a long time and while Koito’s with Hella 80/100s had plenty of output, period correct looks, quartz housings, a great pattern (probably the best I’ve used in an H4) and by far the best bang for the buck, I needed the 5700k temp. All worthwhile reviews were in sync that retro fitting an LED bulb in a halogen housing was a feeble move at best, so I dropped coin for the Holleys. That was two or three years ago and zero regrets.I'm curious why you aren't running the Koito housings?
If you’re okay with the warmer 3000k temp of the H4’s the Koito kit can’t be beat. The Hella 80/100s were $3 a pair when I bought them and the Koito kit was a little more than what I see them going for now. Crazy good deal for some of excellent lighting.
