first off the 4 door speakers are driven off of the amp in the radio and the subs (rear deck) and the effects speakers (center console) have there own amps and get there signal thru the rca inputs,
you cant even come close to the same price with any model, the D3 is a lot less buggy but doesnt have bluetooth built in, you need a BT module, and the ipod interface is not as good as the F-series, not to mention no voice rec.
the F-series seem to be hit or miss, some people have quite a few problems and a lot (myself included) do not have any problems, other than about once a month i need to disconnect and rreconnect my ipod, pluss since it runs windows there are so many mods that can be done to customize it to your likes
if i where to reccomend somthing other than the pioneer i would look at either a kenwood(execelon), alpine, or eclipse being at least twice the price