Message From Space works well either way ala Toho's Frankenstein and Monster Zero. With the English version you get to hear the Western leads the way God intended but lose the Japanese cast's voices and vice versa. Pick your pleasure. Or possibly poison as Peggy Lee Brennan has the most grating "Jewish princess" voice you could imagine.

August mentioned the aspect ratio in another thread I think. I've sort of been unsure of it myself. Toei's disc is in the 1.85 to 2:1 neighborhood but the trailers are in 2.35 and look like they show off more image. I've heard conflicting reports as to the film's real aspect ratio.