I'm using a NTG4 RER radio [PN: 05064737AC] & am going to need to inline an interface to make it functional in a 08 Caliber that only has a factory non mygig unit. The two options I am finding are the PAC or Lockpick adapter. Which one is the better interface to go with?

The price difference is about 50.00, but is there a reason as to why? Will one out perform the other? Should it matter, the car does not & will not have backup cams.