To be honest, ChronoReverse's looks the best. It showcases the SCP improvements and is an actual in-game image. Although the way the lights look at the far end of the Orion's runaway seems a bit...tacky. (IMHO)
I can't see any of Singh's images and can't comment on those.
Really, you don't need to doctor things up much at this point. Something like
this shows off high-poly meshes, high-detail textures, reflections, high-detail planet backgrounds...and that's just a ship and a planet. Although it isn't a Freespace-universe ship.
I'm back with a fair amount of free time, so the next mediaVP should be out by Wednesday. Whenever I get finished with the mediaVP (Could be tomorrow, could be Wednesday) I'll use the best aailable submission and put that one up. The author will get full credit in the readme.

About version numbers and such: If you want to add them, that is fine. The next release will be 3.5.6d. From now on I'll be making an effort to use a different picture for each release rather than my old Sathanas screenshot with superimposed version #. If you want to throw in "Freespace Source Code Project" somewhere, that would be awesome. But please, no touching up the screenshot itself with photoshop, it will be much more impressive if it's all made by the FS2 engine.
All submissions are greatly appreciated. It's pretty flattering that people actually remember the mediaVP even though I haven't updated it in ages.
