you didn't really need to make another topic for this...(imo)
many people use vegas movie studio (instead of the full version)
and it has made many fine videos on this site.
you don't need the +dvd stuff, it's just a bundle (though it might come in handy).
get either one that you want, but you should know that the full version (Vegas) is ~$500, while vegas movie studio is ~$89
unless you plan to do video editing professionally (or are really gung-ho about amv making), I'd reccomend getting vegas movie studio