I doubt there is any REAL answer to this question - best would be "whichever one you are going to concentrate on teaching in".
However - I would have thought that you would be aware of the Pprune rule that says "No multiple postings".
Please - choose ONE forum - post the message ONCE (if it's in the wrong place somebody will move it for you.
I'll leave the one in "Flying Instructors Forum" unlocked.