Uppers by far, name me a clan with 3 stop abilty cards? name me a clan with a 8 power card at lvl 3, 4 and 5?
however upper would be close with the fact that they can have 2 possible 10 power cards and 2 9 power cards.
All Stars, all in all their excellent bonus is better than ulu watu's or Bangers ( a power 6 versus a power 4 card is better than a power 8 versus a power 6 card) I agree that Uppers bonus is a little better especially with low pillz number, but All Stars have 2 playable 5 stars and 3 playable 4 stars cards, they have 2 excelent cards with stop ability ( that are allowed in elo, not like jackie which was a little too much for a 4 star card) and they also have 2 excelent stop bonus cards (excelent for the number of stars they have) : Flo and lamar (one of the best cards in this game). it's tough to name the best clan, it depends on your style of play, the metagame, if you are playing elo or not, but based on my experience in elo i've grown to love this clan for their excellent bonus and many denying (ablitiy and bonus) cards, now with the introduction of Marina their only visible flaw is covered to some extent.