Just to post about the last companion Nadia: She is actually pretty fun to have in your party as she doesn't play the roll of a tank but she can do massive melee damage if you gear her up right. You will take more damage than you are used to since she cannot control aggro but if you keep her alive she can be a heavy hitter. I rolled a full heal spec and I rely on either her or Felix Iresso.

I have heard many people saying that it goes to the imp. agent but I have only done Sith Warrior, Jedi Consular, and Jedi Knight. Out of those three, I like the SW the best closely followed by the Consular. The only reason the Consular isn't as good as I hoped is because if you roll as a healer, the best companion Theran is almost useless. Also, you dont get your romance companion Nadia until almost the end of the game. Everything you do with her gets crammed into one planet and then its done. Playing as a Light Side Sith Warrior is very fun as you get to back talk and mock your master.

IMHO, the Consular has the best story but is flawed by the order of which you obtain the companions. Theran is a blast to have around (thanks to Holiday's outbursts) but if you roll as a Sage, he is pointless to have. Nadia was a really cool companion but you don't get her until lvl 42ish. Her entire romance (if you go that route with her) can be completely finished by the time you leave Voss. Great story but bad companion mechanics. The Knight story I felt started off really strong and enjoying with Kira bringing in some good times. I however soon got bored in Act 2 and thus made my Consular character. I will eventually go back to it since it's my tank but I really feel like it lost some steam after Act 1. Rolling a light side Sith Warrior atm and it sure does feel good to back talk to Baras Check out my review of the game over here at 1up.