My set up is currently a FC40 with Tarot gimbal and I borrowed a Hero 3 (original, not plus) from a friend. I was originally hoping to pick up a cheap Hero 3+ when the new version came out, but they seemed to go out of stock pretty quickly. I've now had to give the camera back to my friend recently, so I need to look at my options. The GoPro Hero 4 black is pretty expensive, but I was wondering what the wifi range and lag are like. I don't need to fly it totally FPV, but I could do with a usable wifi signal to line up shots. Sadly with the Hero 3 was pretty useless for this. Does anyone know how that lag and wifi range compare to the Hero 3 or 3+? Failing that, perhaps I need to look at a proper FPV setup. Are there any reasonably priced (legal) options for me in the UK, or do I need to change the transmitter and receiver to 2.4GHz and buy some 5.8Ghz FPV kit? I'm concerned that this is fast becoming a very expensive hobby, and am starting to wonder whether to stop now before it dents my wallet any more.