nowbody wants to understand that "PIONEER "!!! Stand still for the Audio quality !!! thats why they have those huge prices for the units.
i had all kinds of 2DIN units starting from kenwood to alpine clarion jvc audiovox and many more. Even a few of the chineze types built for my car,also with igo or any navigation system you would like to run. BUT! they all sound like crap!!! trust me i work in the HI-FI bussines. I made a few comparision with a 2010 5-er bmw with DIRAC sound system and guess what! MY AVIC SOUNDS WAY MUCH BETTER THAN THAT.
This : http://avic411.com/index.php?/topic/3276