This discussion is one that we see a lot here at RCU (as well as at other RC forums and at the field as well) and it boils down to this:

There are different kinds of people in the world.

Some people will tell you that if you're going to paint the walls in your house, the proper way to do it is to sand off all of the old paint, then apply a sealer and wait two weeks for it to dry. Then apply a primer coat, and let it dry for two days. Then apply two coats of the paint of your choice - allowing drying time in between.

When you wash your car, do you hand-wash it using a mild detergent and then dry it with a chamois cloth and wax it? Or do you run it through the local car wash?

Do you go out of your way to go to a name-brand gas station and fill your tank with their super-special premium gasoline that cleans your engine and reduces friction, or do you go to the local "Stop 'n' Go" on the corner and fill up with the cheap stuff?

It is painfully obvious that going out of your way to fill your car with better gas will keep your engine running better, smoother and longer, but I don't do it.

Now if I were flying extreme-speed planes, or serious competition Pattern flying, I would balance my props.

But I'm a sport flier, Most of the things I fly are in the 46 2-stroke range up to small gassers with most of them falling in the 91 - 120 4-stroke range. And I don't balance my props.

I'm not saying that balancing props is a bad idea, it's a good idea. But I don't do it.

Neither do I buy the $15-a-bottle shampoo that the girl who cuts my hair says I "really SHOULD use"