>>5291250They're pretty good in my experience so far. All are worth owning, but they're not perfect. I've got UW Superion, UW Menasor, and CW Defensor.
Known problems:
Menasor's the weakest overall in the hips department. He's also kind of top heavy, or he feels like it in my experience, which, combined with the weaker hips, can make posing him a bit of a chore. He might just flop over if you don't balance him out well enough.
Defensor's in the middle. He has some hip problems, but they're not as bad as Menasor. His chest plate though, is his worst feature. It doesn't really stay tabbed in too well. Can be solved by maybe making the tabbing more secure via joint tightening methods like superglue or futureshine, maybe. Or by just holding the chest plate when you move his arms.
Superion is just the most solid. Guys a rock. Not completely perfect, but easily the best.
You'll probably be best off looking for UW Superion if you plan on getting him though, people are scalping the shit out of the CW version's limb bots.