I have the Sig 231 EX with an OS 1.60. Great combo, very good wing loading no bad habits during landing etc... Good 3d set up, but could be better with a Moki 2.1

I also have a Lanier Edge 540T 1/4 scale. I did some mods to lighten the kit and my dry weight is 12.6 lb. I originally mounted a Saito 1.80 but was unsatisfied with the performance. A OS 1.60 has proved better, but again there is no replacement for cubic displacement....

I have not flown the H9 Edge, but is is larger than the Lanier (25% V/S 27%) and cant help but think the Saito would not go well if you are looking for the 3D stuff.