I never warmed to rFactor, I felt it was too similar to F1C without significant improvements, and with menus I didn’t like, so I used F1C for every season available. rFactor had other series as well, but I couldn’t be bothered about those.
Now rFactor 2 looks brilliant, and if there are multiple seasons and the game is so realistic I might try the evaluation version and see if it’s really good.