First of all, you don't have a completed project to show off. Because of that you posted in entirely the wrong subforum (Show Off Your Project).
Second, try the FAQ:
http://www.mp3car.com/vbulletin/advfaq.php
Third, only you can decide what is "best" for your install and your budget. "Best" is purely subjective.
Lastly, the tech has been around for over five years. You only located it recently.