Those water shots are some of my very first DSLR shots ally, I didn't choose not to freeze, rather I didn't know what I was doing :P The original is 1209.jpg, first run through the filenames! Bit of nostalgia there. Nowdays I'd use AS to drop to about 1/3s or look for a rock. I tend not to carry a tripod around while backpacking or sightseeing, although that might change in the future.
In Set 3 the sky is well and truly blown I'm afraid, a 4stop underexposure from RAW only saves a bit of it. The rocks are also very hard to tone down - the brightest parts are blown and large areas still appear correctly exposed with -4EV. I think I'll go for 6 - it's not a killer shot and I can cope with a few pics in an album having flaws just so I get a thorough inclusion of the memories.
In Set 4 there is no sky detail - it's a featureless haze. I could photoshop one in I guess :E I think I'm with liquid here.
#1 & #2 I'll have another look at. Quite an interesting subject - that's a girl revising in a Chinese uni. Lights go out at 9pm so lots and lots of students gather outside and study by streetlights.
Interesting that you differ on Set 2 - I can't choose between 3 & 4 either. Might just put both in