Searched the forum but could not find anything. Made my mind up and decided to sell the Sensenich FP that came with my RV-9A project before I even installed it and go with C/S. Done deal,,,its sold and gone. Van's has two MT props for the IO-320; a two blade MTV11C/183-59, and three blade MTV12C/180-57. The two blade is almost $2K less than the three blade, but only has a 1000 hour/72 month TBO, where the three blade is 2000 hour/72 month TBO. Looked at Whirl Wind RV200/300 series and although they are a bit less costly, their TBO is only 650 hours/72 months,,, so maybe penny wise and dollar foolish there. The Sensenich composite is out of the running due to its high cost and their aluminum two blade is ugly and 7 pounds heavier than the 3 blade MT. Anyone running the MTV12C/180-57 on their -9 with a PIREP? By the way, Tiffin Aire in Ohio quoted me a price better than Van's.