I'd definitely take pocket Aces. It's the best starting hand in poker and gives you the highest chance to win preflop. AKs is strong too, but aces are already ahead.
Pair of Aces of course , it's better to have a pair of Aces . But I have lost to AK suited dome times , it was disgusting . I seey AK many times being against AA , unreal how many times I have witnessed it , set up hand yo lose