Well, once the engine is running, I only care about seeing a nice big yellow prop arc:



I'm not going to stare at the spinning prop to determine how many blades it has.

Even with the plane on the ground, the big prop arc looks decent even though the prop has only two blades:

* [link=http://www.whitetyphoon.com/rc/h9_corsair/movies/SlowIdle.wmv]Corsair Idling[/link]

I have to admit 4-blade props do look better when they are sitting still, provided that they are not gray APC's.