what a relief! finally got rid of my Z3 !!!
to be honest, it was the worst car audio system i have ever had!
for those of you who are planning to buy this: D O N ' T
the software on this unit is such a mess that makes the unit unusable!
i've heard even pioneer wants to stop improving the Z series (probably due to this numerous problems) and replace it with the F series.
Just to let you know, i got the kenwood 8120, the navigation is much simpler than Z3 (so what ! gets me to the destination and actually makes it easier to use) and the USB and iPos is great , i just love it. it also works with my phones phonebook (don't need to enter the contacts one by one like Z3, and don't need to sync it) and i can play music on my phone and listen to it form my car's speakers. it even plays divx ! NICE !!!
cheers