There are two official versions of PMMM out there: the TV series and the movies. The problem is that one isn't "better" than the other, they both have pros and cons.
The movies have many scenes redone with better animation. However, the movies also cut out some of the content from the TV series. That creates a problem: which do you watch? The "uncut" TV with worse animation? Or the prettier, but cut, movies? Fancutfags made a version which combines the two, so it has the full TV content but with the movie animation improvements.
Another option that gets you pretty close is to watch the TV episodes 1-8, then the 2nd movie. The first movie cut a lot more content than the 2nd did.