How to upgrade the headlights? Like HIDs or LEDs?

It’s often about what’s better? Or what suits my car? And rarely about technologies HIDs or LEDs came from. So maybe anyone knows the answers?

I found few steps for this process mentioned below.

1: Find Your Headlight Bulb Type
2: Purchase an LED Conversion Kit
3: Unbox Your LED Conversion Kit
4: Take Some Photos
5: Locate Your Headlight Bulbs
6: Remove Your Halogen Bulbs
7: Install the LED Bulbs
8: Connect the LED Ballast
9: Check the Cut Off
10: Secure the Ballasts
11: Test Drive