Got my 3.0 yesterday.

In two words: It's awesome! I was actually very surprised by how responsive the engine is. And I'm saying that coming from a 335i! I don't understand people who say that the 3.0 is "underpowered." Yes, it's not a vehicle for drag racing, but it accelerates just fine whether it be a city road or a highway. Two thumbs up! (the only thing I would change is the standard steering wheel, which is a bit large and thin; I guess next time I'll order the sport package).

Side note: on the way to the dealership, I got a chance to ride in a 35d X5. The vibration and engine noise at idling and low speeds were pretty annoying. So, now I'm happy that I didn't order the diesel.