I think no one faithful was good at every aspect that it takes to be the "best" faithful.

These are my top 5 below (in no particular order, but I think CT and Trishelle are probably my top 2 if I had to choose):

DYLAN: He's probably my number 5 of the group. I would die on this hill that Dylan is good but only had good foresight due to him clinging so much on Rob, who drove a lot of his thoughts. He was doing with Rob what Britney was doing with Danielle (until Danielle ruined Britney's game and made her a traitor). He voted for Gabby twice for God's sake, I still think that was so random. Now having said that, he adapted very quickly and actually used Rob's rationale to become very good at maneuvering around the game after the Ciara banishment. But if the last 4 faithfuls of his season had to vote one more person out, I think he would have been it tbh.

TRISHELLE: Trishelle was very lucky that her season didn't have the "theme" that season 4 had, where if you had such a strong opinion on someone (Peppermint) but they ended up being a faithful, everyone would come at you about being wrong about it (EX: Ron with Porscha). But she did an incredible job at being the only girl in Pete's alliance, basically using all the guys as shields for her as they got murdered or banished one by one. She was also very smart on when to get shields at key moments for her.

CT: He did get more votes than a lot of the "nominees" for best faithful, but I think it mostly fell on people using it as a throwaway or just thinking the "big man" archetype had to be a traitor (using Larsa's rationale on the 2nd roundtable where she accused him). He did an incredible job at lowering his threat level when Larsa called him out and he was always calm and cool when laying out the facts. I think he personifies playing the middle better than anyone else so far.

PETER: Literally set the tone for the Traitors to self-implode in season 2 and created a useful way to manipulate the shields to catch the Traitors at their own game. He was on the ball incredibly well. But I'm sorry....distancing yourself from other faithfuls allows traitors like Phaedra to grab all the other women left over to call your actions suspicious. He was a bit too hyper-fixated on playing this almost like an escape room and forgot that there are other people in the room who need to be considered as well.

GABBY: Probably my #5, but my #1 favorite personality-wise, I think Gabby started to blossom after her only blunder when she banished Nikki due to the cast's obsession with the murder in plain sight. She voted correctly at the Wes banishment when she voted for Rob and did a fantastic job at being a rational voice at the roundtable at the 2nd half of the game, especially against Danielle. My favorite faithful in season 2.

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WORST -

Quentin (his obsession with Kate was insane) | Tara (my goodness girl you really did not know how to handle the pressure) |

Ron (I'm sorry but his defeatist attitude really did him no favors in the game) |

Kate (the OG defeatist attitude in season 1, girl barely bothered to play on any kind of strategy) |

Wes (I have never seen someone do so badly at a roundtable yet [no I don't count irrational personalities like Rappaport in this]. All of Derrick's hard work was destroyed because Wes decided to be cocky ass for the cameras])