Sounds like a good vehicle options wise.
Even after you buy the vehicle, bring it to a BMW dealer and complain that the trans is jerky...you may want to even bring in a few SIB #'s. They'll hopefully get you the most current software, and you'll be good as gold.
Honestly, the trans on the X3 just isn't that great. They still have a lot of programming to do, because it's nowhere close to the one on the X5.

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