Along with this is location of the transmitter. That photo above is not bad. I like mine to be in a comfortable area and I try and show new guys the same way which to me is around the waist line. I see many pilots that in my opinon could be better flyers by being more relaxed if the tx was anywhere else but up by their chins.

I am a "thumber" on airplanes but "fingertips" for Helis