In K2, I have always found it pretty easy to get the Zeiason Sha Initiate Armor and the two Jal Shey versions. My question is where and how do you get the more powerful versions like the Zeison Sha Warrior armor or Darth Malaks armor? Is there a certain level I have to be at or something I have to do to get them? Or is finding them just pure luck? Thanks for the help.

Its pure luck-drops and equipment you find is, for the most part, totally random. This can lead to strange situations where you find Jedi Knight robes on the Harbringer, and blaster pistols everywhere else. I think that some of the items you find do require you to be at a particular level before they might turn up, but its still random.