The TPS comes with a 9x6 3 blade, works fine, 15-20MPH slower than a 2 blade and a lot quieter. They also don't seem to be as sharp and deadly as the APC 2 blade ones. The 2 blade props I'm using are 10 x 6 APC. Just remember that you need different spinners for 2 and 3 blade props. Nice 3 blade aluminum spinners are hard to find compared to 2 blade. Also, 3 blade props cost more. With a nice normal generic 2 blade setup you can walk into any LHS and find a wide assortment of props to use. With a 3 blade you might only get "I think we can order that for you sir!" - Joe