Drilled and slotted, so mainly about the looks and not the performance, IMO.

I'd go with OE. ECS sell them as well, they will give you the best performance and the price isn't out of line.

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue