Well I am far far from a experienced pilot and I have just begun the learnign process, but I have tried FMS, RC Masters and G2. There are others but I did not try them but it was not because of the programs or anything I found what I wanted and I stopped looking. But I used FMS for a week or two with a joystick and when I made my first flying attempt with an instructor it felt like I had been doing this for a long time. I like G2 and I am just getting started learning what it can do. Is it the best, I am not qualified to say. But I think any quality simualtor out there will acheive the goal of fine tunning your skills. So to get started right now you can always download fms and use a joystick while you research and decide which sim (G2, Reflex, Areo, RC Masters) is best for you.