I think the reason i find Branagh's rendition of this soliloquy so good is that he delivers it from a standpoint of power. It seems like everyone else's 'To be, or not to be' is projected from this place of defeat and anguish. I think K. Branagh played Hamlet most like the text intended; a man with the newfound power of having a distinct mission of revenge and nothing to lose. The setting is sort of lone and not so dark. It sets a powerful mood.
The Mel Gibson version in my opinion is probally the worst one. He tries to put his heart in to it but he comes out looking like a homeless asshole. When we read that speech in class and even the whole story of hamlet i invission him as a well kept young man with a new found interest in life or death. Mel gibson is sort of portraying hamlet as raggedy man with crazy ambitions.