I currently have the Pioneer D3 and I was going to upgrade to the Z3, but after being on this forum it seems as though the pioneer AVIC Z119BT is the better choice. Just a couple questions if anyone knows. Does the Z119BT have tilt function? Hard Drive? (require nav discs?) Is the dvd picture quality better than the Z3? Let me know if you guys know the answer. Thanks ( first post by the way)