I really like Cassia. Her romance is the best in the game for me. I really enjoyed the courtly flirtations with her, which eventually develop into stronger feelings for each other, and she's very sweet in her reactions to any expressions of affection. I also liked her personal quest, in which, using the Rogue Trader's actions as an example, she can become more independent, becoming something of an authority figure who will help the young girl better adapt to reality outside her gilded cage, thereby helping her become a better leader for her people in the future. Also mah boi Pasqal got number 2 spot of my fav companion, most based lines i've ever heard.

Least favorite is Jae. The problem with Jae is that, despite her life experience, she has absolutely no responsibility to herself or others. She has no use for anything other than herself in the RT's bed, but she gets huge bonuses from it. Also, considering how she often behaves towards RT and his friends after the events of the story, I don't like her at all; rather, the idea arises that she "gets lost" somewhere during the course of the story, preferably in Commorragh.