well, there have been a lot of events, and while most people tend to recomend only the newer ones... i recomend a whole variety of events throughout their history. ok, let me slide over to my collection...
Return of the Warrirors
there's so many more i'd recomend, but that's a good start across their years... i tend to like their stuff from around the middle of their time cause that was when you had every fight between 2 huge stars! it was a great time!
anyway, hope that helps... got any questions, just ask!!!