Hand 1: Fine

Hand 2: Interesting. You get a raise preflop from SB. What puzzles me is that you call the flop bet with what looks like a thin implied odds call knowing he's value betting a hand you can take him deep with if you hit. Then you raise the turn and get a potfuck river. Why is this? Did you decide he wasn't so strong after all on the turn?

Hand 3: Fine. Turn sucked bad

Hand 4: This is totally relationship based. He seems ready to show down IMO, but only you would know. I would stick it all in on the river and let him cry. I think you get a call sometimes. It's a good choice because even if you don't get called often enough, you own his stack anyway unless he leaves. Slap the wolverine and get it now or later. By the way this looks suspiciously like AA. That would blow.