Prop Balancing!
I have to agree with both of you. there gets to be a point where it becomes over kill. balance them on the Top Flight balancer and go flying. I have a trainer with an OS 40 LA motor on it that has well over 200 flights on it. still purrs like a kitten and running fine, and I only went 50% on balancing it.
Don't get too wrapped around the axle worrying about the small stuff is what I say. Heck, if you're gonna worry that much, on touch of a prop on the runway is gonna put in the pits for hours re-balancing your prop.
just my 2 cents worth