depends if youre talking aftermarket or stock. stock, any new, decent or high end car these days will have a decent system, and even slightly older hondas have pretty good systems. aftermarket, alpine is about the highest end you can go, but theres always kenwood, infinity, sony, and so on. basically any name-brand electronics company will make decent systems. and plus, you can always mix and match if you like a specific component from one brand.