I went AIB and like them. The quality of each unit surpasses the LUX lights IMO. The LUX looked cheaper in comparison so went with the AIBs. Do we need them? Not really, but I liked the look of the 2012 M3 and new 5 series lights.
Umnitza was cool for the E46 M3 crowd/car but not for this car. Just me. I used Umnitza and they were always good to me when I lived in the Bay Area but the quality was cheap and so was the price so went with them back in the day.
Again just my opinion. All my E92 M3 needs have been met by BMW of Vista, Horsepower Freaks and EAS.