Oh yes - in a heartbeat - I am very happy with the X6 - it could have been made from paper mache and I would have gotten it as long as it has that engine
And the interior - its just minor things, like transitions between wood and plastic trim pieces that are off slightly. Unless you actually look for it or are unlucky enough to brush against the exposed edge you wont notice it.
About the sound - its hard for me to be objective having not heard it back-to-back with another system - but I was expecting a little more, though I am not sure how that could have been acomplished.