It’s amazing how headlight technology has improved over the last 20 years. The biggest improvement seems to be with the lenses themselves. Sure HID and LED headlights are super cool these days, but they are still pricey to replace and aren’t quite in every car yet. Both cars in the image above use regular old halogen bulbs. The car on the left has factory bulbs, which are supposed to be long-life (ie- cheap, low output bulbs). The car on the right has aftermarket Sylvania Xtravisions, which are 25% brighter than the standard bottom-barrel bulbs. The difference is the car on the left uses reflector optics (clear lens with disco ball reflectors) and the car on the right uses lens optics (prismatic lens with curved reflector).
What does the techno-mumbo-jumbo mean? It means the car on the left has better light output with cheaper bulbs because of the clear lenses and mini-mirror reflectors bouncing light exactly where it needs to go. The light diffuses better to show a brighter pool of light. The prismatic lenses on the car on the right will concentrate the light into a straighter beam and also block some of the light since it has to pass through a lens of varying thickness. The more premium light bulbs can only do so much with light output. It still better than the cheap bulbs that were in there before being swapped out.
Halogen bulbs are cheap safety upgrades. Buy a nice set of premium bulbs, aim them correctly, and your night drives will be fun without blinding anyone.