I have tried the smaller speakers and found that while they do sound good that they lack and deep or low tones and that any engine or other noise is very noticeable as the frequency response is higher. I have had good results with the wilson metal cased speaker. It sounds great reflecting off the windshield, but I am always on the hunt for new or maybe better options. Will try one of the Motorola speakers here soon, like the amplified one!! Anyway JMO. God bless.