Hand 1, I would definitely reraise that flop. Button already called 2 bets, you might as well try to squeeze some more out of him before the turn hits and he realizes he's lost. Or, alternatively, you might as well get him to fold before the turn hits and he makes his miracle set on his low pocket pair.

I think you didn't give us the aggression stats on these players, and instead only the preflop raise stats, so I'm not sure what kind of player MP2 is except that he's way loose. Without knowing whether he's aggressive or passive, I definitely am reraising this, for value, to see if he caps, etc.