Sunset in color versus B/W

Sunset in color

Sunset in B/W

In the last post, I commented that "the picture won't work in color".
Here I have two exactly same picture -- one processed in B/W and the other in it's original color (yes, I post processed, so the colors aren't original).
Which one works better? -- I guess it really depends on preference....
I'm still debating..... no answer for myself yet.  Maybe I should work harder on processing the B/W file, there're so much to handle......