It's hard to believe, but Brett's pompousness is almost entirely an act. He's trying to go the Dr. Will route - insult your housemates, act like the annoying douchy bro, don't win too many competitions, and stay loyal to your alliance while pretending that you're not in one. It's actually working right now. For the past couple of weeks he has turned off the arrogance and is now much calmer, sweet, and caring when interacting with other houseguests. Haleigh thinks he's great now and refused to nominate him this week because she thinks he's actually on her side. Even Rockstar has come around, said she likes him and has even been spotted hugging him.
I can't stand Sam. She is not playing the game at all, not even a little bit. In fact, she derides anyone who tries to play with strategy, as she thinks it's despicable and that the game should be played personally. She has threatened to quit many times and walks around constantly talking about how much she hates this game, hates being there, hates everyone, etc. It's just so annoying to watch. Her slut-shaming of Kaitlyn and Haleigh doesn't help her case. I can see where she's coming from with Kaitlyn because Kaitlyn had a boyfriend at home, but Haleigh is single and naturally flirty, and did nothing to deserve Sam's ire. Sam made several statements that were even worse on feeds, like when someone else brought up that some of the guys, like Tyler, can be flirty too, and she said "they're men, they can't help themselves." Just yuck.
My favorites right now are Scottie and Haleigh. I like Tyler as well.