You probably need to look at a couple of my older videos and you will see the difference. But to cut a long story short when we would fly in our local park towards the edges of the road on the inside of the park I would get a lot of signal noise on the standard antennas as supplied by Hobby King. Mind you for a stock standard system I think it was still very good. The video below was taken a few days ago with the Skew Planar and Clover and I was blown away. Only issue I get is when flying directly over head (which you normally don't do. I did this intentionally), but Multi Pathing is expected when overhead. I have no idea what the range is at the moment but I can fly outside the park and the signal is rock solid and best of all when I bank its still locked in
This is the latest video with the IBCrazy antennas I made:
My friend uses his GoPro for FPV and he is changing back to a Sony for FPV and keeping his GoPro for the quality recording of the flight. The GoPro is too Laggy for FPV along with a number of other issues that's why people like BlackSheep don't use it for FPV.