Just watching it now. They were all pretty even in the performance although I can't actually recall seeing Derrick, Dax, Cynthia or Kim standing out. Based on the runway I'd have gone for a Derrick vs. Kim/Dax but the former two are kinda obviously getting an easy ride for their personalities.
Robbie turned it out in both though

her and Chi Chi were MVPs this week.
I'm quickly going to go off Kim though if they force her innocence and shyness and cuteness down my throat much more obviously. She's nice but this edit is heavier than Phi Phi's makeup.