Save yourself a lot of trouble and stay with what you have. Anything otherwise leaves you at the mercy of marketing genius aimed at the unsure.

Change your bulbs in pairs because old bulbs do in fact grow dim.

Halogens work marvelously, you’re less apt to blind oncoming drivers and you won’t be back with problems because you “upgraded”. If you do decide to upgrade, do it with Genuine OEM parts or deal with flickering, low output and burned lenses.

And be sure to take this opportunity to clean your headlight lenses.