I'd Say , It Depends on what you need on your System ,
Yeah Don't Go for Canadian Tyres ,
Use German or Japanese Ones , Also Use All Weather , so you won't change them every Season .
Back to the Sound system Now
If your Car Supports the 2-Din Stereo use one .
Also If you only need radio and music , i'd say go with a No CD/DVD Unit , Only a Digital Media Receiver one.
After Trying a lot of the new products on market now-a-days .
I would say go for The JVC brand .
After Trying it , it is One of the best available .
Go To JVC DRVN and Se what they have ,
Also They Support All Speaker Sizes so you won't Cut any Dashboard of Extend The Rear Shelf for installing ,
Also if you need instruction I will provide you With every thing you might Need .
OK Now ,
For your budget :
I would say , Speakers , 500 Watts Oval shaped for A Nice Bass ,
if your car does not support Oval Shapes , get a Round ones , with a Subwoofer in a box and put in the trunk with the Armrest Vent Open , and That's The Shyte I'm talking about here , Damn Nice bass .
See , For the Woofer , get the size you want for the Radius depending on your Boot and what you use of it ,
And For the Amp , Get the in between 400W RMS - 600W RMS .
but installing an amp will cost you more for the usage of Wires and Cables and A Capacitor for a clear sound .
You'll find The Parts at any JVC Retailer :
I will post some recommendations :
Stereo : Your Choice Depending on usage . I prefer the digital media receivers because I don't use CD/DVD's in my car . USB is always better and hold more music and A 320kbps frequency . You'll find a lot of amazing stuff , see your choice and choose ,
All Units on Market have 3 Sound Chips Only , JVC/Kenwwod or Sony Or Other Euro Market chip by Blaupunkt .
Almost The Same .
Speakers : Front . no amp needed just use the stereo and no wiring inside needed . Also if your Front Speakers are running nicely don't change them ,
Also change the Fader in between 3 - 4 front , 7 - 6 Rear , so the audio will rock and you'll never hear outside , only smooth music with no distortion .
Rear : as I said Oval or circular :
These ;
http://mobile.jvc.com/product.jsp?modelId=MODL029175&pa...
Or These :
http://mobile.jvc.com/product.jsp?modelId=MODL029176&pa...
AMP :
http://mobile.jvc.com/product.jsp?modelId=MODL029182&pa...
That One Is Epic . Have that in My Brother's Car , it's EPIC .
Yeah , a Reminder .
While Doing the Harness , Make Sure that the Power Cable Goes on the Left side of the car , and The Speaker Wires Goes On the Right side , or Oppisite side , Depending on your car main harness .
Eventually , What I mean is ,
Keep the Speaker Wires away from the Car Harness , so you won't hear any gas pump noise through the speakers .
because the Power Make A lot of Distortion when close to the Audio cables . by handling that much power .
Resources :
Done More than 10 cars Sound system ,
My Old Car had a 2400W RMS , clear as haven , and Smooth 8 Speakers and 1 1400W woofer , Cracked my Rear view Triangle Window because of the sound . My Set was Kenwood , ( Now Kenwood and JVC are the same company Under license From Panasonic .
Any Questions , i'll be here .
Good luck Mate .
Cheers