H3 for the 2000-2003 X5s with the projector housing.
I HAPPILY installed these into my LCI X5.
I'm NOT sure why BMW took these out for the LCI of the E53. DUMB move. I am much more impressed with these than the H11 reflector design.

Anyhow, just make sure the light output is more usable light and not just "looks brighter/bluer/whiter" but is actually casting down the road further or else its just a cometic change.

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I swear, my cars are like a girlfriend.
Sometimes its a rough ride, sometimes its smooth motorin'.
Sometimes she doesnt like how i treat her and sometimes i dont like how she behaves.
BUT at the end of the day, she loves it when I am inside her.

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'91 850i
'05 X5 4.4i
'09 Clubman S