LED is a better option. Do some research to see how each LED is made. Some put the LED right where the filament would be which gives it the same beam. Others put multiple LEDs which throws off the beam and then you just have a bright light with no actual beam. If you have the old square glass halogen/sealed beam bulbs you can buy new housing that take H series bulbs that you can put the LEDs in.
Something like this.
Headlamp option