My 11x6 G-sonic props came in Friday but I couldn't find an insert for the 8mm opening in the prop to use them. That is more than likely why they are hard to find in my area. They need to make them in 1/4" shaft so that they would work with more engines. That way if someone needed to ream it out, they could. As soon as I find an insert, I will give them a try. I put an APC 10x8 on it and retuned the pipe and really like this combo though. Good speed and decent climb. I've tried this prop before but didn't like it very well because the idle had to be upped a bit and it didn't want to slow down for a landing. I put a decent sized screw-on aluminum prop nut on it to give it more mass and that made all the difference. Idle was nice and slow and the plane slowed down decent enough for an easy landing.

Also my two G-Sonics came pretty well balanced which was nice.