I have super bright yellow PIAA bulbs in my Halo's and couldn't be happier with them. I'm all for being different and everyone and their mama has LUX. My boy used to have them on his car (last car to the right in the pic below...only halos on in that pic and look how bright they shine) and he gave them to me after getting his new custom ACM dual projector headlights installed.
It's all about what YOU like at the end of the day. I didn't really like the eggyolk collored halos from factory but i LOVE the bright yellow ones I have now because they don't look like any other BMW on the road