I just finished installing the Alpine IVA-D310 Multimedia Station. I looked and listened to all of them and highly recommend this unit. I installed it myself because I wouldn't have it done by anyone else. Problem is this system consists of three basic items. The Head / Video Unit. The DC to DC Converter, and the Tuner / Control Unit. Lots of stuff to fit into a small car. A GREAT system!! I kept the original amplifier, speakers and subs. I also added rear speakers and amplifier.
More photos in my Gallery. Still a work in progress... but quite an improvement over the stock system.