I have a JR662 and love it. Just be careful of one thing. If you nedd to use a buddy box, do not use the 662 for the instructor if at all possible. The 662 has a button that must be pushed down to keep control in the hands of the student. It does not take much side pressure or movement to move control back to the instructor, and holding it down perfectly straight can be very difficult if the student flies for long periods. We can contribute at least one crash of my trainer on this. It really should be a lever you can pull back on.