Please, but I beg to differ. MAS props aren't "crap". If you need to enlarge the hole in a propeller, please, by all means, use a prop reamer. They're intended for the job and will keep the hole in the same place.

The main difficulty with drilling a propeller is that you can get the hole off a bit, unless you use a drill press and are very careful to exactly center the drill bit in the hole. A propeller reamer is self-centering. If the hole is slightly off-center, or even tilted a little bit, you can have severe vibration problems that may be very difficult to track down. It's not so easy for most modelers. This is true regardless of the brand of propeller.

We've used a very wide variety of propellers over the years and have really found little fault with any of the major brands. They all need some fine-tuning to bring into balance. Wood props are the most inconsistently-balanced in the off-the-shelf condition. You do need to check the balance of all props before you fly them. It's a good idea to have a few spares that you've balanced and know are good.

bax