I'm looking to upgrade my corona ring bulbs. I have a 2006 E53 with the bi-xenon headlight assembly. All of these bulbs listed seem to show the same for all 2000-2006. I know 2006 was the first year for the bi-xenon headlights and I'm not even sure if all 2006 MY had them. Is it the same bulbs whether you have bi-xenon headlights or not?
I'm also interested in a recommendation for halo bulbs that are under $100. I'm sure I don't want the cheapest, but would rather not spend $170 for two bulbs.

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Tim in Indy
2014 xDrive35i