First hand;I reraise alot more to isolate heads up preferably(or even open push if I think none of them have Aces).I probably pop it to $15.

Flop:How much was in the pot?$30 I take it?I prob lead out for closer to $25-$30.When the big stack min-raises you it seems to scream that he either wants a call to pot commit you with his set.I would reraise his raise and see where he stands.

Unfortunalty this is why pairs are dangerous when you have a big stack;it's why I'm always nervous playing AA/KK/QQ/AKs as a big stack and the other big stack calls me.Unfortunalty he made his set and busted a huge nut when you pushed.

Second hand: CR the flop.Or reraise the other clown.

Turn is push city.Get it in while you are ahead and if at worst could still be drawing for some outs.

You tip your hat to both of them and pay off with confidence.