Speaking as a 14 year old kid who switched to Cox engines way back then, and worked his way up to be Director of Engineering for the company (subsequently scuttled by E*

$s) I have a real dedication to the original company. It is a real grief to me what has become of a modeling icon. Words can not describe the conflict of wanting to use the engines I know and love, but not wanting to support that &^%$# person who now owns and destroys a part of history.
Just so you know, I have worked for Estes pre-current management, Fox Engines, Cox when it was Cox, Mattel (11 years, ever heard of HeMan?), a bunch of free-lance work, several companies dedicated to producing toys for the quick serve food chains, Cox before E**

$s bought it and then degraded to C*x. After that more consulting, and actually still, in mostly retirement, consulting for the Disney Co. Stores (Not actually Disney, though I do own their stock)
All that as background, I have always been a believer that first you learn to fly on something bulletproof, then learn to build. My current favorite trainer is Mike Ogren's Plastic Fantastic 24. In three weekends, I taught two people how to fly, and got them all the way through figure 8s and inverted flight. Probably 50 crashes and no damage. It is the video game concept of go as far as you can and get right back to it. No fear, no damage, learn the skill. That plane is as close to press "reset" as anything else I have ever seen.
Andy Borgogna's kid had crashed his ARF Flite Streak doing a loop. Serious discouragement! Back off and watch from a distance time. We got him flying the PF24, and by end of day, no discouragement, no fear, no crying, he was doing figure 8s and a couple of outsides. I loaned them the plane indefinitely! I hope I get it back for the next kid!