Hmm, a lot of cards, have you made any theoretical decks?
have you combined cards that you think would be good, and found the number of stars taken, to see who you can use?
Junta has high power, and high damage. + Tank, and Bryan for stop ability. All Stars are a great clan, and have a wide range of playable cards. Nightmare has mid range power, and some cool abilities, probably one of my favorite clans to use.
and Bangers... i never much liked using Bangers, but i'm sure they have their high points.