Any of you have, or had, one of those extended car warranties you see advertised on TV such as Car Shield or Endurance? My car is looking at needing a new $6,000 transmission and I am debating on whether or not to buy one of those warranties to get it replaced. My local mechanic does not accept any of them so it would have to go to the dealership assuming they accept them. Trying to decide if they're worth it or just a pain in the *** to use.