I run a Pioneer X1 sat nav / DVD combined player. The company who fitted the outfit moved, at my request, the cd holder you get with the car to where the original cd player was then fitted the X1 where the cd holder was. This enabled the screen to come out fully from the unit ( because of the half moon shape above, part of the dashboard, the screen wont open fully if fitted where Kia fit their cd player ) I have been very, very pleased with the Pioneer, as it is all touch screen & very acurate compaired with the Alpine sat/nav unit I had in previously. Combine this with full DVD player running the rear screen for my son, Plus a whole host of extras, to many to go on about here.Not the cheapest around but easily the best !!
Hope this helps