Im using a new one I like very much for this type of stuff (more HDR look) Oloneo HDR . For a more natural look I like Photomatix Pro or even Photomatix Essentials . Just my opinion .
I think 1, 4, & 6 work quite well. I'd love 3 if the red of the bridge were like it is in 6. I really like how the water looks in 3; as a former fly angler, my eye always goes right to moving water.
3 is my favorite...
1 & 2 make me kind of dizzy haha I am a little sick though; so it might be the drugs talking :-)
The processing was over saturated, but its tasteful.
Nice images