Take the "Flat Lens" Challenge!

There are many words in this parent thread: http://www.dpreview.com/forums/post/57375526

Now let's have some pictures. We have here shots of the same static scene taken with 3 different lenses of the same nominal focal length. They have been processed identically except that I converged them via minor adjustments of brightness and color balance.

Which do you like best for conveying the impression of scene depth, and why? be sure to view the composite image at original scale.

When a pretty good sample size of comments have been collected, and it would be very nice to have the principal contributors from that prior thread participate, I will reveal the identity, vintage, and number of elements of the lenses.