I went from stock halogen bulb to the LUX V4 set at 5200K. Impressed so far. Inner bulb looks good in daylight. Outer bulb is a little dim for my liking, but from what I've read, that's to be expected with the e90. I'm going to double check my alignment this weekend to see if that effects the outcome.
On a side note, I'm brand new to the world of BMW. Just bought this car two weeks ago. So glad I made this choice over the other cars I was looking at.
