I'm considering this unit and would like some feedback.
I just installed a DNX9140 in my 2004 10 days ago. The unit was installed with the PAC steering wheel control interface, back-up camera, iPod cable and the override to allow DVDs to play on the screen while driving.
Here are my observations so far:
The unit fits perfectly into the space and looks very good in the dash
The backup camera is the best part of the whole thing!! I can finally back-up without feeling like I'm going to run over/into someone or something!!!
The Bose interface cable works fine and the sound is very nice
The Garmin nav is great and works like the other Garmin units I have used in the past
The Parrott Blue tooth works great and the people on the other end tell me I sound great
The iPod interface is great and even shows album art when playing
The Voice recognition works fine (I simply say "Go Home" and the unit starts to navigate there)
The downside is that the steering wheel controls will not do the phone functions and you have to use the touchscreen or the phone (I use BB 8900 Curve) to do easy things.........other than that I am very happy with the unit and would recommend it. I do think that you absolutely must get the back-up camera as part of the install! In my case they used a very nice chrome license plate frame that looks very nice and the camera is rather stealthy
Let me know if you want any more info!