Assuming that you're talking about 1:18 scale models, I covered the recent releases in this thread. The Autoworld 'Silver Screen' General Lee is the most accurate so far, but will cost you $80-90. I have the previous one by Ertl (very similar detail), and it even has seat belts, accurate hood hinges and a wired up engine. The recently released patrol car is also the best so far because it has the correct lightbar for the first time. Conversely, the original Double Zero is slightly more accurate, but you'll have a hard time finding one of them now (they came with a 1:64 model in the same box and occasionally appear on Ebay for about $250). If you want a new Double Zero I'd get one quickly as they seem to be getting thinner on the ground.