I just received on of Ray Stone's rather unique control handles. It is really well done. I got the smaller one and made a couple of very minor mods since I wanted to use it for larger models (the smaller handle was intended for 1/2A):
I replaced the steel cable with a larger diameter adjustable cable and I put in more blind nuts to allow more line spacing adjustment positions. This handle fits my hand nicely and is light weight where most of the other adjustable handles are too big and bulky to be realy comfortable and because the adjustable cable doesn't go around any sharp corners it shouldn't have that "spongy" or "springy" feel that other adjustable handles have...
I suspect that the non-adjustable neutral type handles that the top guys use give the best possible control feel. But since I use this on several airplanes an adjustable neutral is a must as is an adjustable line spacing. This handle has both.
For $10 this is a great deal.