II would concur the Multiplex Easy Glider looks good for this particular job. Fixable and rugged EPP, looks like a "real" sailplane in flight. Also comes with electric motor option for launching instead of a histart or winch.
Inexpensive, so little to lose if they don't wind up liking it. Will work fine with a cheap 3-channel hitec single-stick or something more advanced. What's not to like?
