Spence the GP is most likely a better quality plane than the GWS so in my simple mind I wouldn't want to use the fragile PZ tronics in it, the GWS is cheap and easy to fix when and if crashed. I too question the quality of the PZ plastic frame foam skin planes, I have my second PZ-P-51 that I am yet to sucesfuly fly, I know many that fly it well, we are just of a few that can't,,, BUT I will say the tronics are not very forgiving to crashes as I have fried to sets now with minor crashes compaired to what my standard equip has taken to date, If you were to go with the GP Corsair don't sell yourself short by using the PZ stuff, it will most likely come back and bite you, for 20.00 you get the slope version of GWS and then the loss is small. Again just my 2 cents worth. I will also say unless it's just a warbird you want the Formosa is a excellent plane, fast,responcive and can glide quite nice wit a very low stall speed