I put this motor in my P51 Mustang with the skywalker 20a ESC and 3s 1300mah 30c gforce batteries. They all work great together. I found with this setup 8x6e props pull 12.62a and 147w, APC 9x6e-14.77a 170w. They have plenty power to swing my favorite props. Plus they are cheap enough to purchase a brand new one if something goes wrong.
The shafts bend like any motor, and replacement shafts are cheap enough. I will recommend to Locktite the grub screws holding the motor on the mount.
My motor now has a "click" to it, and Im not sure why. I might run it until it dies, then buy a new one, at that price I can't afford to say no.