First time through the game (in P4) I used Yosuke, Yukiko, and Naoto.
In P4G I'm using Chie, Kanji, and Teddie, if only to be as different as possible. --- Don't believe in yourself, believe in me! Believe in the Chaos who believes in you! Please don't say you are lazy. The fact is, I'm really crazy.
My very first playthrough I used Kanji, Teddie and Naoto because they were my 3 favorites.
My second playthrough I used Yosuke, Yukiko and Teddie because I just wanted to rush through the game as quickly as possible, get the bad ending and start over so I could do P4TW.
My third playthrough I used Chie, Kanji and Naoto because the latter 2 are some of my favorites, and Chie was the only character I hadn't used at that point (note: this was long before Golden was announced so I was convinced this would be my last playthrough of P4 ever)
Now that Golden is out...I dunno. I haven't decided yet. I'm leaning towards Yosuke, Kanji and Teddie (because except for Yosuke I like all of them, but I do really like Yosuke's 3rd tier Persona)
ADDITIONAL NOTE: The Chie, Kanji, Naoto team...I don't recommend it. I'm sure it's not as bad in Golden, but in regular P4 I believe that is the worst possible team setup. Heavy reliance on physical attacks, seriously lacking varied magic, no healing spells...Not a good setup. --- Don't forget to check out my MegaTen themed webcomics at http://www.drunkduck.com/user/Strain42/
Kanji, Teddie and Naoto because I like them the best. Also, Teddie's and Naoto's skillsets seem to be fun to play around with in this version. --- Your twisted logic is that of an immature, egotistic brat! - Naoto Shirogane
I'm using Yosuke, Kanji, and Teddie, but I'm curious what other people use.
I'm only going through Yuki's tower atm (I restarted twice. <.<)...but I'm not sure who my main group will be. Outside of Yu and Brosuke. The other two will be interchangable probably. --- Conversations tend to be more civil when there's a chance the other person might snap and kill you.