Well, since we're sharing our preferred pronunciations of monster names, I generally tend to go with "Angilas" instead of "Anguirus," and I find the pronunciation "Guh-DOOR-uh" to be absolutely appalling. "GEEH-doh-rah" all the way.
I'm in agreement with Goji 84 on
Monster Zero--that's what I'll always call it, though I must admit that
The Great Monster War is pretty honkin' as well. It may be worth noting that I always refer to the main theme as the "
Great Monster War March."