I've been browsing the forums for a while now trying to decide on which navigation system to go with and after research decided to go with the Pioneer AVIC-Z1. the other day i went to the local car audio shop and to find out pricing ect. The guy there was very much against Pioneer and he said there had been problems with the Z1. He recomended the Panasonic Strada(CN-NVD905U) as another option. I couldn't find any foumns on this model so i was wondering does anyone know how these compair, if there really reliability issues with the Pioneer, and if the Panasonic will have hard drive space reserved specificly for personal music storage like the Z1? Any help anyone has would be great. Thanks