Ok this is probably a dumb question due to the fact that there is most likely more than enough information out there on this subject. I have just failed to find it. My question is about props. First off is copper better than carbon fiber or aluminum? Secondly, what do all those numbers mean? If I look at carbon fiber props, it will say something like dia. 29mm pitch 46mm. That is easy enough to under stand, but if I look at a copper prop it’s all crazy like X427 (1.06”) 1.4x1.06=1.484” What the crap does all that translate too? And finally how do I chose a prop. I learned the hard way what happeneds when you get a prop that’s too large. So how do I know what size to get?