Iv never heard Beats in a car but imo they are just VERYYY overpriced for the sound quality. You pay mostly for the design and style. Sennheiser always has amazing sound quality, to bad they dont make car speakers =/ If anyone is looking for a sub I have a 15", 500w RMS, Kicker CVR id sell. Its in a sealed box with 500w amp, and gives more than enough window shaking bass for anyones taste haha. It even gives full body massages! And very solid, even sound from 20-160hz.