Decent Car Audio Set-up

[Just Ezzy]

Am after replacing all my speakers and then install a sub in the boot, just after some recommendations for a good set-up for around £300-500, dont really know much about car audio so......

[Gazza_DJ]

http://www.corsa-c.co.uk/forum/showthread.php?t=125133

[Ryan]

What CD player do you have? Are you going to buy a new one?