I Prefer the EDGE...if you have read any of my other postings, i am big into EDGE Products...one thing that may help ya decide is...EDGE goes on after the computer, so the computer can't detect it on there, don't ask me how...cause it it plugs right into the computer harness, but that is what they say, and like one other guy said...it unplugs right away. And the Dealer has to prove that after market Equipment had caused the damage...