I have just finished my phase I flight testing using the originally supplied GSC prop. It worked okay but listening to the tribal knowledge here I knew I could and would want to do better. Looking to avoid spending very much on this project I was certainly not going to buy any IFA and planned to get the lowest priced recommendation, a two blade medium IVO.
As luck would have it I found an unused three blade ultralight IVO for $50! (hangar clear-out)
I know that there is an ongoing service letter to preflight, inspect, retorque but for the price?!
This prop has made a very noticeable change in climb, cruise and smoothness. Lucky me!