I just got an Alpine IVA-D900 installed TODAY. It is pretty **** awesome! I LOVE it. I had the stock HU and the sound quality is so much better, it's not even funny. The only bummer about the Alpine is that it doesn't have touch screen, but the quality of the screen is off the charts. If you have the cash, I'd get it, no questions asked!i have the option to buy a in dash dvd player/screen, are they worth it?