I have had a series of creaks and rattles in my E70. The dealership has been great about resolving them, but I feel the factory should have put in some preventative measures to save the customer frustration. So far I had the creaky door seals (same as my E60) which was resolved by cleaning them and right now I have a passenger side b pillar creak and a clicky comfort seat. That said, I am still happy with my X5 4.8is (but the tranny software still sucks after multiple updates).

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PhoenixM3
2008 M3 Sedan - Interlagos Blue [On Order]
2008 X3 3.0is - Black Sapphire, Sport Activity, Premium, etc.
2007 X5 4.8i - Deep Green, Sport, Premium, Technology, Comfort, etc.
2005 X3 2.5 - White, Bare bones, Auto (My business delivery vehicle)
2001 M3 Convertible - Phoenix Yellow, 6-Speed