Even though you have a nice pearled paint job and 18′ sized chrome rims for your car, if you do have a good car audio system, all of that would be superficial. To enjoy a good experience with your car, a good car audio system is a must to have.
As you know that having a poor car audio system will definitely spoil the experience when you are driving your favourite toy. Although the investment for a good system is steep, it is definitely worth to have for the marvellous experience that you are going to enjoy. However, not all expensive system performs well if they are not installed properly. Therefore, be sure to hand it to a professional if you are not proficient enough to do a good job.
How do we determine whether an audio system is good or great? The answer is that only you can decide as it must first exceed your expectations. If you find that the new system that you are testing is way much better than your current system, then that one is definitely better.