My Jeep is old enough to drink (1997) and it has always had pretty bad sealed-beam headlights. On the advice of a friend who runs an old jeep as a mail delivery vehicle I finally bought a set of drop-in replacement housings to hold H4 bulbs and then a set of OSRAM Nightbreaker Unlimited bulbs.
NICE! If you aren’t paying attention I don’t think you’d even notice that the headlights are different by looking at the vehicle, but the visibility difference is astounding!
FAR better beam pattern, and a tested 98% increase in brightness over the old sealed-beams.
If you have an older vehicle running the rectangular sealed-beams, this sort of upgrade is well worth the money, the 20 minutes to install, and the 15 minutes to re-aim the lights properly once the more powerful bulbs are in place.