I thought that I had 3 junked speakers in my Grand cherokee, so i took it into Jeep to have them confirm my opinion. They sayd only one was bad. So, I replaced the two rear speakers, just in case, and left the front two alone. Now, it's obvious that the front left is busted too. So, I took the least bad of the three junk ones and put it up there for now. I got 3-Way Pioneers for the rear, do i need to get something as nice as those for the front to replace those two?