I've had some experience with the Slo-V. It's a good airplane, but with the V-tail, if you choose to put in your own radio gear, make sure you have a transmitter that has V-tail mixing. The rudder and elevator functions will be combined in the transmitter, so when you make control inputs, you get the right reactions from the plane. You'll also have to replace the stock servos; the originals are set up for the Parkzone brick receiver and won't work with standard gear. Not sure about the Fly-Sky radio - again, does it have V-tail mixing? Something like that might not have the features you need even for the simple Slo-V. Take a look at the GWS Slow-stick if you want something that uses conventional controls.