WEll if you want my version. Dont get a p-51. Get a step up. You really cant do all that RCpilet said on hte nexstar, so its not your fault. MY definition of mastered is (and it refers to me and how i decided i mastered it) - Take off, land, got your wings, practised stalls, did basic aerobatic maneuvers (rolls, loops, a trIENR cant hande much more the nthat), touch and goes, deadsticks. If you can do that, your fine for a step up. I got an easy sport, which is htink was the best investement ever. ITs a great flyign plane and i will hold on to it for a while. I did soem pretty sick tricks with it that i could have never done on my trainer. I did an inverted pass over my field with it, but im trying to do full circels inverted, thats my checkpoint for an aerobatic plane like the H9 Twist.