Bleh, this movie...in BOTH cuts...bleh.
The American cut feels a little lighter and more fun, but good LORD that narration..."I picked up my radio" "I waved" "I told you what I was doing while I was doing it" ugh. Also, "Gigantis" and the Anguirus roar for Godzilla really just ruin this for me.
The Japanese cut, however, features none of the unintentional hilarity of the American cut such as the science lesson on the history of the universe, or the horrible dubbed lines.
Other than the monster fights which have an eerie, surreal quality due to their speed and the subtle score, and the climax of the film, I find this one by and large uninteresting.
There are some solid composite shots, though...like when Godzilla and Anguirus are battling and in the foreground stuff is being knocked over and in the background the city's on fire, or when the prisoners get drowned.