The most expensive model airplane prop is cheaper than the least expensive ER visit.

I've only ever had one prop incident, had one come loose when my Saito .80 4s kicked back. Didn't come off, but that was enough for me. After I get the motor started Iget ot from in front ASAP and do all my work from behind. Hey, I'm already blind in one eye, don't need to play Russian Roulette with the other one!