Headlights

Any brand compatible bulb will work, just replace them in pairs so they'll match in brightness

 

It's a matter of preferences. I prefer the "long-life" ones, even though they have that "old fashioned" yellowish light.

As a lazy procrastinator, I usually don't bother replacing both at the same time, and it has never bothered anyone. But I always have a spare in the car, because the second one often burns out soon after.