FPV Skydive was my first sim, but it was so lacking in features (and the physics were so off) that I quickly just shelled out the small payment for Uncrashed
I absolutely dig real drone simulator (https://www.realdronesimulator.com/).. its still in development but already very nice (and free). The rest of the time I use Uncrashed, sometimes Liftoff...
@BlaqkstarFPV well it laggs behind the other sims but its not that bad. its somewhat close to fpv logic.. what I do like about it is that you can't just fly through a tree for example. the drone gets stuck. sometimes it can be freed without reseting which is makes it more real than with some other sims.. sadly there wasnt an update for a long time.. but the dev didnt give up on it, he is still working on it.
I’m not gonna lie my favorite is the Zone by nils vo fpv, really helped me learn my rates and is just one of the most realistic feeling sims out there. Not floaty at all. It’s still being worked and improved upon constantly, which is amazing. I encourage you to check it out.