I started a thread about this a couple of weeks ago. I was also confused about which ones fit my car as mine is an LCI but with Halogens, not xenons.
Thread Here:
http://www.e90post.com/forums/showthread.php?t=928270
Makkann00 advised that these are the best ones for mine, but I still haven't bought them yet, I'm waiting for someone else to take the plunge first!
http://www.ebay.co.uk/itm/171123446530