OK, I have now tried 5 different flybarles systems. All of them have their good points. Most take a long time to learn. Probably have 200 hours in this. Heres what I ended up with on my Trex 500. FS600 flybarless controller, with an RJX head. It does not use a PC to program. It comes with a programmer that fits in your pocket. I was able to learn it and install in 3 hours. It has every paramater I could want. No reinitialization after changes. All adjustments were named something I understood. It is a 3 axis unit. The tail part off it works as good as my Spartan. Really. The cyclic works just as good. I am able to make it fly exactly like my flybar, or a blasing fast 3D monster that is to much for me. I never dreamed a helicopter could be this precise and fun. Been at this for 20 years. Oh it was half of the cost of other 3 axis controllers, I almost didn't buy it because of the price. How come I have never even heard of this unit? It is so damn stable. I will NEVER go bac k to a flybar. Flight times get me tired. Also I bought it from a dealer I never head of. When I called them with a setup question they had the answer and knew the sytem inside out. Only problem now is I need three more. I found it at heliflightcenter.com