I have alum. hex trim and love it. This is my second F10 and my first had dark wood and found its scratched easily, we stopped putting the keys in the center cupholder keyholder. I think the alum hex looks very racey and gives the car an attitude inside.
There are some pics of it in my post back in May of my car:
http://f10.5post.com/forums/showthread.php?t=530637
Congrats on your car, hope you enjoy it as much as I have.