Lots of versions released, with differences in stages, physics, hardware.
Kinda hard to nominate a best one, but tyhe important thing is that they all rule.
Mod that adds force feedback support, and some other nice touch-ups / updates.
Newer mod with a lot of improvements, making it probably the best version. Graphics scale nicely, you can force best quality versions of models and textures, online works again, does force feedback with wheels and controllers, you can add entirely news songs without having to replace the original ones…
There's a folder called 'Savegame' in the 'OutRun…' directory, with the files 'License1.dat' and 'common.dat'.
When I had it installed in 'Program Files' those .dat files were not actually created though. But saves still worked! I assume a permissions issue, with a built-in workaround? Not sure where/how that works. Can't find anything in AppData, or My Documents, or anywhere obvious
When uninstalling it will ask if you wish to keep 'licence data' :)