I have taught using a nitroplane trainer that belonged to the student. What the airfoil was I can't recall. Before you think of buying anything from Nitroplanes you should do a search here about the company and there products so your better informed.
Also take a look at the sticky here with all the trainers and info that has been posted.
As to the Sticks, if you have an instructor and a buddy box your good to go. I have never used one to teach with but I wish I would have. After the solo you have a plane you aren't in such a hurry to move away from. A stick is as close to a perfect plane as you will find. Anyone that doesn't like them has never flown one. They don't do everything with precision but they will do everything!!