I think you played the other hands just fine Duck.
The closest is probably hand 2 because the turn cr is player-dependent really and you don't have a read. Versus someone who might cr the turn with a flush draw or A3/A4, or someone who might just bluff the 5, you can call down. Without a read I probably call it down too. You're only beating A3/A4 or a bluff on the river, but getting 10:1 you can't really fold at that point.
I was pretty sure this guy had me beat. But I've had plenty of marginal situations in my downswing where I've folded on the river to a turn check-raise or even the turn, and I wanted to make sure there wasn't anything strange going on. I could have folded the river, I don't beat anything though.
Thanks for the comments guys.