My impressions from first test flight with the new S6R receiver from FrSky with built in stabilization. It think it works very well. Stabilization mode makes the plane feel like a simulator, and is perfect for slow speed on the edge of stall. Hover mode works, but requires some manual input to make it perfect. (I made no inputs in the video). Knife edge mode works too, but is not that useful as a lot of manual input is required anyway. Autolevel mode is good for beginners, and as a failsafe mode in case of lost rc signal. Overall it is pretty good, and well worth the extra money!