Who do you think had the most potential on the show, regardless of where they are now?

I am watching for the first time, middle of season 3 now, and have noticed that Whitney really keeps herself clean on the show, and seems to be the only member who completed higher education. I feel like she seems like one of the smartest girls on the show. Lauren is obviously also motivated and seems like she would be going places (and she did haha). In contrast, I cannot watch Audrina not understand that Justin Bobby is a horrible idea!! That girl needs to realize her worth!