#1 was #1! The first one, in my opinion, was the best. I like the Turtles in any shape or form they decide to come in, whether it be movies, comics, games, toys, stickers, cartoons, etc., etc. However, I'm gonna have to say that the one medium that was my favorite was the original Mirage comic book series. It had perfect balance- the storyline was the original, the Turtles' characters were done properly, there was a perfect blend of twists, humor, and action, and last but not least, every other character wasn't a mutant (this really ticked me off about the Archie series, as wonderful as it truly was). Therefore, the first movie was my fave, since it was very close to the original Mirage series. Certainly, a few things were backwards (it was CASEY's grandma's house in Massachusetts, not April's; LEO got the crap beaten out of him, not Raph; etc., etc.) but all in all, this movie was extremely close, and has been called the closest comic-to-movie adaptation ever. The second movie was good, too, but it didn't feel as much like the original, and it didn't feel as much like a real movie. It was nuts, and that's what I love about it. As for the 3rd? It wasn't all that bad... the plot was the most original of the three. So it did have a good plot, only... it was poorly executed. They could have done a lot more with it. They had all the original actors and voice actors back except for April, who was still played by Paige Turco (Judith Hoag was WAY better! What were they thinking?), and yet they just spouted one-liners the whole time. That was my problem with the sequels- there was no communication, only one-liners.
Thank you for your time.