I perfer Ah Kh in a allin in situation.My reasoning behind it is ive played a long time and won many times with a common group a hand suppose any high pockect including AA.Today at ultimate bet in 50 dollar sit n go down turbo i ended up winng with Ac Qc allin pre flop vs Ah Ad flop came 10SJHKD giving me nuts straite im not saying it always wins but i perfer non pockect due 5 card hands like the one i hit heads up to win