Love the pictures. Looks like the picture you took with the Biogon was darker - and more brooding (but still plenbty of detail. I like that for the atmosphere - as if the generator were lurking there.
The other one was much more balanced in lighting - and more informational - probably a bit sharper an impage (f22 and all...).
As you can tell I like the first one better - for artistic reasons. But which one is "best" I think depends upon what you were trying to achieve!
Excellent photos - you should post them in the gallery!