It looks like a good product, I am tempted to buy it - those sci fi hallways have always grabbed me, just not sure whether it is any easier to get a good result from this than the tools I already use (remembering that me not being an artist, a good result for me is something that doesn't look anywhere near as good as the above). I think I'll download the demo.
EDIT - just downloaded the demo. Had a problem with trying to mirror the sections in the 'example.3dw' file. I tried selecting all of the wall sections (ie ctrl-clicking each of the wall (not floor) sections at once, then mirrored them on the z-axis, mirrored them on the z-axis again and get a "illegal operation - press close / details'. Also could not get CTRL-Z to perform an undo operation, as well as CTRL-C/CTRL-V to copy sections, had to use the menu options instead. Is this just in the demo?
EDIT - just downloaded the demo. Had a problem with trying to mirror the sections in the 'example.3dw' file. I tried selecting all of the wall sections (ie ctrl-clicking each of the wall (not floor) sections at once, then mirrored them on the z-axis, mirrored them on the z-axis again and get a "illegal operation - press close / details'. Also could not get CTRL-Z to perform an undo operation, as well as CTRL-C/CTRL-V to copy sections, had to use the menu options instead. Is this just in the demo?