I've made several more flights on the Stinger. It flies like its 422 brothers:

1) It comes off the ground quickly in a few feet.
2) The model easily knife edges around the turns without loosing or gaining altitude.
3) After the turn you leave it on the 45 degree and line it up for the next turn. This one handles like the big boys.
4) I used an engine kill so that I would learn to dead stick in for a landing. You can use a throttle if you choose.

The kit costs $125 plus $15 shipping. Figure about $100 for other materials plus $85 for an engine.

This make a relatively low cost option to practice your Q-40 flying or start Q-40 Sport Racing.

I'd like to hear from others on this concept.