Best halogen bulbs I ever used were the Osram Rallye 65w H7 (64217 single filament). Basically an H9 burner on an H7 base. Fantastic white light that threw way down the road and so much better overall than the blue tinted stuff you buy at the parts stores or Wally. I used to source them from Daniel Stern Lighting but they were discontinued some time ago. He was able to source a replacement from Vosla that are basically identical. A bit pricy, and don't last quite as long as a standard halogen, but you can see so much better with them. An excellent equivalent, thats a little less pricey and easier to get are the Philips Extreme Vision +. here on Amazon:
https://www.amazon.com/dp/B00QJWTQYY/?tag=2402507-20
Please, DO NOT put ANY LED "bulb" in a halogen reflector housing. The light will be way more diffuse and cause tons of glare that is dangerous to oncoming motorists.