John, how about the "Slow Stick"..?
It's technically a SPAD and I've never seen any traditional RC trainer in this size range any easier [or slower] to fly.
It doesn't use coroplast for the wing...it looks more like the thin sheet styrofoam that you see at the butcher shop. I don't know how the flimsy wing is made stiffer, probably small diameter carbon or fiberglass tube or round stock.
The problem with these planes is they are so easy to fly that they are pretty boring once you have mastered it's control, but for someone who is just learning, [possibly someone with experience on a flight simulator]...the Slow Stick would be a good 1st plane in my opinion.