re: Car Audio

If you want quality sound, you'll have to start by upgrading the head unit. If you don't want a lot of power and very high quality sound, that should be plenty for the power side.

From there, a decent set of components up front, a cheap pair of rears for fill, and a sub and amp.

Depending on how much you want to spend, and how high a quality you're looking for, the options can range.

For 6.5" components, about $100-150. Rears, $60-ish. HU can be anywhere from $150-1000. Sub and amp (and box, and wiring kit, etc.) can get expensive. But a good setup shouldn't be more than $150 for sub and $150-200 for amp.

For brands, I like Alpine and Polk. Pioneer, Kicker, Rockford Fosgate are decent as well.