Death Ghidorah (Or DesGhidorah if you wish...for some reson they call it by it's Japanese name in the dub, sorta like how they call Rodan Radon in GvsMG'93 dub...whatever :roll ) was indeed a suit, but it had two dudes inside it like the horses in school plays.
Grand KG indeed rocks. If only he'd, ya know...actually
kill something...Dagarah was cool, too bad the movie he was in sucked...
Overall, I'd say my fave was M1, then M3, and way way way way way down the list, M2.