Recently bought an RX8 with the navigation system. I would not ever suggest buying this system. My biggest complaint is the fact that you can not use most of the features while the vehicle is in motion. To find the closest ATM, restaurant, or any other point of interest you have to be stopped - real handy when traveling 70 down the interstate.

 

I totally agree, my experience with a CX-9 with Navigation has been extremely frustrating. And unfortunately, driving to the closest gas station may send you 5 miles back in the hyway.