English dubbed, the screen is hit with a lot of text identifying every politician and piece of equipment, if you add subtitles to that, you miss a lot trying to read the movie instead of watching, English dubbed allows you to take in more of what's going on.
Of the solo Godzilla movies, '54 has the best story, pacing and plot, I'd say then '84 and Shin's is probably the most "boring" of them all, but as jye said, Godzilla himself is a relentless force, everytime you think they've done him in, he comes back with even worse threats and even the end leaves you wondering what more will come of him. It's VERY unique though, unlike any Godzilla before it and likely one like it will never happen again.