Summary: Not worth the money I bought this before I knew that Pioneer only put out one map update in 08. Outdated maps antiquates this item. It is slow to initialize and difficult to operate. The instructions are not very good. This model has to have the sd disc installed for navigation to work and if you are not careful you could easily erase the map from the disc. The S1 is a better model.
Summary: I really enjoy this product. Once you figure out the menus and intricacies it is fairly user friendly. The only thing that sucks is the voice recognition. I told it to go to TARGET 8 times, and I got 8 different responses. Since the system does not let you search via the menu while driving, I find this to be a terrible hindrance, The stereo sounds great, the bluetooth works well, the iPOD thing is way faster than everyone said.
Summary: The good: Great graphics, loaded with features, pretty easy to use. The bad: - Sometimes the screen goes blank and the only way to get it back is to turn off the car. - iPod interface is SLOW with no alpha lookup - BIG GLITCH! And scrolling is SLOW. - GPS is off when you first get going - it shows that I'm in the middle of a field when I leave from home. It takes a bit for the GPS to find the unit. I didn't experience this with my last NAV system.