Bob I have a wind S 50e and the quality of the build is great. The hardware is okay but I swapped some of it out. It's a built up 2 piece fully sheeted wing and built up fully sheeted stab. 2 servos in the stabs. Only build problem was loose stab tube and I just glued it in. With the hacker a50-16s and 6s 4000 battery I am pulling 71 amps at 1600 watts. Great power.