John, it is nicer without vignette but it is a good image any way.
Hmmm, I can now see why you did it, there's a lot of flare at the edges and in the corners it suppressed. That said, the sky still looks rippled by dark areas.
Of the three versions, I prefer the middle one (which I hadn't seen until after I saw the third version).
I prefer the middle one John. IMO removing the vignette completely spoils the spooky mood of the image