Wow 3 RCT2 entries! This game is finally getting some love and attention that it deserves <3 All four entries are fantastic, however, only one can come out on top.
Freischütz: To compare your build to the real one, I watched a video and let me just say now, that is one interesting braking method, having the launch act as a brake too. To the point, this recreation/interpretation was pretty good, although the top hat was not inverted on your build, that is understandable due to RCT2 limitations. The scenery fits the ride well, and since this is based off of a real coaster, the lack of substantial theming is understandable. However, the scenery that was included looks very nice
Psycho Inc: Although the layout is not too realistic (I believe that is intentional), the industrial theming is pretty good, although like MrNozem said, the gears may have been a bit overdone. I also feel that there are way too many supports, and unfortunately, I feel like that the supports make up a pretty substantial part of your theming. If you had made more buildings around the ride and maybe spiced up the ground/terrain a bit more, this ride would have had a better chance in the competition.
Noxon: I have not really played RCT3 in a while, but avocado this ride is so fine. The layout is very nice and the ride makes it through the course at a very nice pace. The scenery seems a bit generic, but the station looks great. An interesting-looking CTR too if i might add.
Uranium Launch: Terry, if there is one thing you are amazing at, it is building great rides within compact spaces. 6000 feet of track in that tiny space!? Incredible! The ability of you to incorporate scenery in such a tightly compacted coaster is also astounding. The layout. even as compact as this, remains at least semi-realistic and has good pacing (Some of those turns at 70 MPH may be a bit extreme though

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All in all, although I love RCT2 to death, I think my vote for this round is going to have to go to Noxon for its amazing scenery, layout, station, and pacing.