Hand1
Definitely stacking it off on the flop. If he cold called a 3-bet out of the blinds with 22 or K6s then good hand to him. Way more often I expect to see a draw here, another AK or even KQ/KJ type of hands.
Hand2
Its kind of difficult to believe, he backdoored into a flush, but he might have flopped a set or turned two pair with KJ. You have an overpair in a 10 SPR multiway pot, and this is definitely a situation, where it require a very strong read to stack off. Without such read good fold. Never get married to aces.
Hand3
The way I look at this situation is, that if I was going to bet for value when checked to, then I am absolutely not folding to a donk bet, unless its a massive overbet. Its the same as saying, that a donk bet is never a bluff, which is 100% not true. If he bomb the river, that is the time, you can probably fold, unless you improved. But not on turn for this sizing.
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