eclipse is not a company that has put all their effort into building woofers, they are a fujitsu10 company that has many different products, diamond however RD their product continuously to bring us some of the best sounding and reliable car audio equipment available, and its hard for me to say it cause a rival store in my town sells it, people come in and ask me if its good stuff, i know if i say yes they might go back to that store and buy diamond, but i can't lie, this brand really is top notch and i'd never make up a story to win a customer