Is 6x9 car speakers a waste of time and money?

6x9 speakers are usually fitted in the back of a car in parcel shelf.Most 6x9 speakers produce a little bass, mid range and high frequency's.I must admit any cheaper speakers are a waste of time and money.But good quality audio which is usually expensive is never a waste of time.6x9 are great if you want to increase sound quality and loudness of your car audio sound system.In fact you can only tell the sound quality difference if you are sitting in the rear of the car.The person in the front will notice the extra boost of loudness from the 6x9's, but will not notice sound quality because the 6x9's are placed at the back.So if you want good sound quality and your going to be sitting in the front seat then it is best to get a expensive set of front component or coaxial speakers.