It happens Kruel, I tell people all the time how fast they can come and go out of nowhere, when I'm in FPV at max forward speed, people NEVER see or hear it coming until I'm right on top of them, or past them even. It's very easy to lose them if you lose radio tx/rx, or even just lose sight of them at higher altitude, it can happen with a sneeze/cough or other distraction very easily.
That Blade Nano unit is VERY tiny, just be warned, it doesn't handle wind at all. If you can at ALL afford it, try and move up to at least the Blade 200 quad, it's a lot bigger, can handle some wind, and can be bought with the FPV stuff pre installed as well. I still recommend at least the 350 size, but the 200 isn't bad. My first quad was the precurser to the 180 that Blade sells now, it was called something else, had different colors, but was identical, and their first quad, and one of THE first quads offered as a cheap retail jobby. I still have it, and mount FPV on it, and it handles wind pretty well for the size, and the little motors still haven't died, I've only replaced a couple rotors, that's it. Not a bad option either, as like I said, the nano is NOT built for anything but indoor or very calm days.
The Blade 200 is about 165$ more than the Blade Nano with the RTF FPV gear and goggles, all ready to go, and it's well worth it. Another huge plus is that same Carbon Fiber kit I showed that you can convert the 350 to, is also made now for the 200, a recent addition. So, you can convert the 200 to a similar kit later if you want, and have a pretty bad little unit, and it's only 80$ for that frame kit.
http://www.horizonhobby.com/product/multirotor/fpv-bundles--1/multirotor-aircraft/200-qx-with-fpv-system-p-blh7780vshttp://www.horizonhobby.com/product/multirotor/all-multirotor-parts/multirotor-aircraft/200-size-quadcopter-frame-kit--aluminum-carbon-fiber-p-mhe20qx005qkI'm going to build this exact set up for some close range FPV stuff and for teaching other locals FPV flying, the Blade 200 on the carbon frame. It'll be a very cool little hot rod, and I plan on putting some pretty neat gear on it, but the FPV stuff that comes with the 200 FPV kit will be great already for medium/close range flights.
Here is a few of my Micros, the mQX on the far left is the grandfather of the entire Blade line of quads, their first, and the Nano is about half the size, not much bigger than any of the mSR types in the middle. The 180 is identical in almost every respect to that mQX, and can easily carry a small FPV or recording camera airborne, I've had this one at least 150 feet up in the air before, and it's going on 3 years old now, and still lives. I can post some pics of other larger quads if you're interested in seeing some options or close ups.
