I sometimes find the brightness of the halogens in my old SAAB to be a bit dim.
And feel a bit jealous when i see some newer car with LED's as they light up the road much better.
Had to change the H4's in the headlights and, fortunately, it is super easy in this car.
I just took the dust cap off the housing and the bulb was right there ready to be pulled out.
One big advantage my halogens have over LED's is that they generate enough heat to melt the snow and ice off the headlight during winter

My biggest problem with newer headlights is the sharp cut-off, because as newer cars go over bumps the beam jumps up and down and as a result can seem like they're flashing their high beams.
And since flashing high beams is a part of the way drivers communicate on the road it can be a distraction.
Halogen headlights tend to be pretty big. The headlights in my SAAB are absolutely huge, yet most of the space inside is taken up by air.
An advantage i see for the LED's is that they can be made to be much more compact.
Newer high-tech headlights (what we locally call "projectors" or "lasers") are often very pricey and a popular item to have stolen, especially if you drive a BMW.