RE: Hanger 9 P-51 PTS
It's a good flyer especially once you remove the training stuff.
With all of the training stuff on ( including the brakes ) it flies as slowly as a normal trainer.
It is a bit more difficult than a high wing trainer, but your prior experience will take you over this quickly ( as will your use of an instructor ).
The plane needs a little work to get it ready for prime time.
Read the long PTS P-51 thread elsewhere...
You do not have to do everything listed in the thread, but you'll find a few key points worth doing.
The included Simulator software is worthless though.
Don't bother with it.