This will be my first aftermarket system I've bought. I'm not looking to spend more than 500 for a head unit, front speakers, a subwoofer, and an amp. I honestly don't know anything about car audio, so I've been trying to read up on the forum. I was shopping around and was thinking about buying a set of infinity reference speakers for the front, and an infinity perfect 10 sub. I saw they got good reviews, and are a good price. Any comments on these? Also, I am going to buy this box: http://www.supercrewsound.com/shop/detail/11/40.htm. Is it any good? Also, if anyone could recommend a head unit and amp, it would be greatly appreciated.