Even with the age of the Z1/2/3 hardware, I would put it above any of the new systems in ease of use and quality. No crashing, navigation moves smoothly, the only down side is poor Ipod support and less than stellar bluetooth. But the main functionality that I'm concerned with works better than my far newer F90BT (which, after 3.0, is worse than ever). The Z series prior to the current one also had some neat functions such as the g-force and side acceleration display, etc.