I'm looking to spend ~$400 on a car that I'll probably keep for only 3 more years. I don't have the time to figure out how to install it myself. My budget will have to include labour. What kind of options do I have? The fronts are 2-way 6.5" and the rears are 6"x9". I don't need thunderous bass or anything too high quality, just some clarity and punch. Upgrade the headunit (~$100) and do the front 2 speakers only (~$200)? Upgrade the headunit and do all with worse speakers?