LEDs are great, BUT you need to do your homework.
Some LEDs have a very poor pattern, and do not have proper shielding. They just scatter light everywhere.
LEDs do not tolerate heat. So they need to have a lot of effort put into designing a good heat sink. Many of those include a fan. You need a lot of room for the fan, heat sink, and air flow. Maybe even a large external power supply. They often have a short life, likely due to heat damage.
Most LEDs are a 6K or higher blue color. Not really the best color for helping night vision.
For now I an sticking with HID bulbs at a 4.5k color. They are great if you find one with the proper shielding and such. But that can be tricky too.