i have the 6600 in my car and that is a bad ass radio but the 7600 has the mp3 and some diff outputs on it. as for the display it has a brightness level that u can change and i beliv it has a dimmer for at night. but they last even in the sun light. i have had pioneer radios in all my cars ant the first one i had is still working in the car and thats 4 years now. also i finley got to play with the 8600 that is bad ass it has full color display and the only doun side is that it is a motorized face, they some times break with alot of use but that is like 500$ unit