Gigan is very high on my list, along with Mothra and the Armadillo guy who was Godzilla's buddy.
Just got King Kong today. Another excellent offering. Three different heads, four pairs of hands, and a couple other accessories. Great articulation and he doesn't even need the stand that they included.
Haven't decided on Destroyah yet. He's just so friggin' huge and I never saw the movie he was in.
Am a bit disappointed to see the newest offering is another Mechagodzilla. Not big on rehashes. Still it's probably a good thing because it'll allow my wallet to recover.