First off I think that I'll just address the major problem with this poll that nobody else been either willing to, or is (god forbid) incapable of pointing out.Nomanslander said:snip
Powered armour, is just that, a full body-encasing suit of armour that is mechanical in nature, the Gear's COG armour, Isaac's mining suit, and the Stormtrooper's armour, are not powered, they're just suits of armour (Or in Isaac's case, a pressurized mining suit with strips of metal rivited on for rudementary slashing protection), and I'm fairly sure the Helghast's armour is also just ordinary armour, unless it had mechanized parts.
The Hardsuit from Mass Effect is a wildcard here, as it isn't powered in nature, but according to the original Mass Effect, it can be upgraded to possess mechanized joints, meaning that is can be technically counted as powered armour.
So you should fix that issue by removing the 'power' bit from your post, or removing the above mentioned armour from the list, barring the Mass Effect Hardsuits.
OT:
My favourate suit of powered armour would be the T-45x from Fallout 3, hey, it looks badass, what can I say?