on the lookout for a new car stereo, mine will only play at a volume you can only hear by turning the engine off!

What's a good site pricewise? Was looking at caraudiodirect.co.uk which seems good. Don't want anything too fancy, but since I have a 10 cd changer I prob can't use any more would be nice to be able to control my ipod through the radio instead.
Kev.