They do all look excellent, especially Fortress. It's nice to see hexplates being used as a main component. On the UHW, perhaps you could swap to Lightning Teeth or Razors, to get stronger/tougher weaponry, and eat up some of the remaining weight.
I want Armored Nightmare 2 on the exchange, it just looks so goddamn awesome.
WHAT PIGLETS FOR DRIVEYOU SHOULD BE ASHAMED OF YOURSELF