I would like to replace all the speakers in my '04 Tundra with aftermarket speakers. I already have a four channel amp, and plan on using the factory in-dash 6-disc head unit. From my experience, I have found that paper-coned speakers provide better mid-bass then the other speaker types. I want to have decent bass without adding a subwoofer to the system. What speakers have you found to sound the best? (my 4ch. amp is 75Wx4 RMS).