Love Rob, always have, always will. Sure, he can be cocky (although that has lessened as he's matured), but I don't see him as arrogant. He has a charm and a smile that take the edge off. He will scheme and manipulate to play the game, but I get the feeling he would give you the shirt off his back if you truly needed it. Bottom line is, he's very self-aware -- whereas Russell has zero self-awareness. Russell thinks he is god. He just barges through with his plan, expecting everyone to kowtow to him, and when it doesn't work he has no idea why.
In this season, I'd say Rob's greatest asset is the hero worship -- and I'm sure he'll use that for all it's worth -- while Russell's greatest drawback is that he is a known entity now. He wasn't in his past two seasons, so he got away with crap that people won't accept now.
As for Phillip . . . oh, my.
A man of integrity doesn't have to TELL you he is a man of integrity.
Any trained federal agent worth his salt knows not to share the fact that he's a trained federal agent.
And for a man who can claims to have great strength in reading people, he read EVERYONE wrong.
You can't have a meaningful exchange with someone when you correct them constantly, tell them when they're allowed to talk, and say "Look at me!" as he did to Kristina. Very entertaining, but what a nut job.