Crutchfield's a good source of information, but you can generally do much better than their prices at other sites. Once you identify a piece of equipment you want, try just doing an internet search for it and see what you come up with. As an example, I got a Pioneer (DEHP77? -- something like that anyway, it's still sitting in my basement waiting for me to do the install) for about $205 or so from cameraclub.com, versus about $260 or $270, if I remember correctly, from Crutchfield. Whatever the difference was, it was pretty big and I made out much better. I can't remember the names of any other specific sites at the moment, but others might chime in.