You can make up your own mind, but I would guess that very few flyers balance any props 11" or under, wood or plastic. I stopped balancing MAS props a while back because they all seemed pretty close right out of the bag, and I don't see any difference in how the engine runs. Folks can flame me about all the bad things that are happening to me that I don't know about, but if you ask around at your field, I think you'll find what I'm saying is true. Don't let me discourage you, if you find it pleases the RC gods, or you're just a little obsessive, or want to use the cool new tool, be my guest. It can't hurt anything!

I do recommend hitting the edges of MAS props with sandpaper. They come so sharp you can cut your fingers just touching them with the engine not running.