i am looking for a new head unit and i was wondering which one would be a better headunit to buy and the headunit are the pioneer -p8600mp or the JVC Arsenal KD-AR7500
does pioneer have alot of problem with bad ground rca jacks out puts that causes car whinning noises because i talk to alot people who have pioneer hu and they say pionner makes good headunits but only what not good are there rca jack outputs