RE: ultra stick as a second plane
Sorry I didn't read all the posts BUT I think the US40 is one of the best planes you can buy, I have all kinds of planes, sport, scale, 3D, and I love the US40 the best. Saito 82, no flaps, really a waste of time and servos. It can do almost every trick, and is a super honest plane. Plus if you hit the ground, $129.00 and your ready to go again.
P.S. I'm also an instructor, we also use the US40 as a trainer, you just have to remember the wings are flat, and it won't come back.