Looking for advice to replace factory stereo myself to save a few $. My truck is an 2009 extended cab LT (no bells or whistles, just a work truck) I would like to put in a nav system if possible, and would very much like bluetooth capabilities so i can talk hands free and play music with my Iphone. What are the compatible brands out there? Is there a simple plug and play system i can buy and easily install? Or should i be preparing myself to also have to buy numerous adaptors and wiring harnesses to make everything fit and work correctly? Im not concerned with XM/Sirius or Onstar, i will probably never subscribe to their services. I just want a nice display system that has the above capabilities (and plays the radio stations)!