I trained a couple of students this year on the PTS P51. First thing I did was take the airbrakes off the landing gear. They make the plane fly like a brick with wings. With the droops , 3 blade prop and the flaps set at 1/2 inch , it is still plenty slow enough and the prop acts like a brake when the throttle is pulled back.
The hardest thing for the students , was the take off . Set up on low rates , the rudder is just not to effetive till you get some air over it. They also have a weak spot . A hard landing or a good bounce will pull the langing gear blocks loose. Pretty easy fix. But I also believe they land better than a highwing.
I bought the ARF a few months ago, and installed a OS .46AX . , no training gear . The throws were maxed out and the things a screamer . Not the most areobatic , knife edge ,Cuban 8s , loops , rolls are o.k. and high speed low passes are a blast.
Not a bad plane for the money.