Uncas, Mine with a YS115 has unlimited vertical, locks very well on both downlines and exits. Snap is the best of any model I have flown with nice break but beautifully slow rotation and solid lock with good line out. Spins with Rudder Elevator and slight Aileron. Downside is it has a lot of side area and does weather vain. Setup is pretty much on with the downloadable setup guide for throws and expo. I have adjusted to my taste with slight decrease in elevator throw and lots of expo in Rudder. CG is slightly behind recommend starting point. Hope this helps.