To the casual viewer, any version of Goku beating Frieza will do. But to a dedicated fan, the differences between the English dub and the original Japanese Dragon Ball Z are stark.
Dragon Ball Fandom Wiki : Useful for identifying original Japanese game titles and release details. Dragonball Z : Taiketsu : Prima's official strategy guide dragon ball z japanese internet archive
The Dragon Ball Z Japanese Internet Archive is available online, providing fans with easy access to its vast collection of materials. The archive is divided into several sections, each dedicated to a specific aspect of the series. To the casual viewer, any version of Goku