I can't say anything for the male's voice actor, but I really like the female JC's voice -- I don't think she sounds robotic at all. Of course, I roleplay her as scholarly/light-sided (which seems to be default personality for this class to take), so maybe that is why I don't have any problem with her voice? Though, when I have taken some more aggressive or playful choices, I think she sounds good then too (a few times I think she sounds pretty adorable). I like that her voice seems to flow smoothly with whatever choice you pick and it doesn't really suffer from emotion whiplash, which can sometimes be a problem with some voice acting in Bioware games. I biased though, probably...the jedi consular story and character are my favorite in the game, so maybe I'm just looking at this through rose-tinted glasses.