As far as receivers go:
JVC makes decent receivers. They have one you can buy at Meijer in the $120 range that you can select over 30,000 different backlighting colors with. Red is one. I've tried out a display model of a higher-up JVC at a car audio warehouse before and liked the sound quality quite well. As far as reliability goes, I'm in the dark.
Avoid Jensen. I had one in the Sonoma. It was kind of old, but it wasn't so old that it should not be refusing to read CDs anymore.
Pioneer makes great stuff too. I've had three Pioneer receivers so far. I had one in the Firebird, which ran around $130 at Sam Walton's Walls of Hell and it had a front USB input for flash drive and complete iPod integration (it even charged it). Sounded great too, even though the speakers in the Firebird didn't match as I later found out. I also have the $100 dollar model from Sam Walton's Walls of Hell in the Cutlass that sounds just as good, although it doesn't have total iPod integration and just an Aux jack. There's an older one in the Regal that also sounds great if you set it to loud. I have never had an issue with them and they work fantastic.
I had an Sony Xplod in the Sonoma before the Jensen. Junk, junk, junk. It refused to read CDs as well and it wasn't old either.
I'm going to stuff an Alpine in the Buick's dash once I rid myself of the Firebird's carcass. I've heard nothing but great things about Alpine although I haven't owned any of their products.
Kenwood has always made good stuff. As with the JVC, the display models I've checked out have had good sound quality.
Avoid anything with the Dual brand. Junk.
Speakers:
Memphis Audio. :AH-HA_wink: