In these various price ranges what do you think are the best Sound Quality Speakers. My personal situation is an Alpine CDA-9820XM Head Unit with a Rockford 851X Amp (advertised 4x110w). This is in an 04 F350 Crew Cab.
Front: Focal 165 V3E ($390) or 270 V3 ($550, if the doors are deep enough to accommodate 6"), professional install will run about $200-$300 (serious adjusting will be involved, so use a quality shop).
Rear: Focal 136K ($300). Set the tweeter to at least -6dB. This will provide decent listening levels for rear passengers without significantly affecting your front stage.