i reckon max and saskia are the 'nicest' (on values, principles etc). ant is up there with them. sam is ok but in her own world and probably prone to little-girl tantrums and vindicteveness at people. hopefully she wont get the opportunity for that side of her to flourish again. maybe the bad vibes is making her behave. science is probably the most morally sound, but vanity and insecurity maybe make him vulnerable. kemal is quite morally sound too but can ber prone to the pressure of noms maybe. he could go one way or the other.
IMHO, makosi is devious. maybe the show will make her more principled. its too early to say. she knows right from wrong but isnt afraid to do wrong. she could be the worst if she decides to go that route.
Craig, Derek, Roberto, Lesley, Vanessa and Mary are poison (but great to watch)