The Stingray500 I'm still building is what really interests me ...
You'll note the battery is much smaller ...
The TBS Disco gets 12min flight on the 4500, where the Stingray gets like 4-7min only.
The convergence of variable pitch AND quad design is pretty cool.
I'm building an anti-drone drone, actually ...
Planning to put a Beaglebone Black running Kali on it, and maybe an RTL-SDR ...
The whole RC space is kind of a parts nightmare and the costs of operation are similar to say, oh I don't know - boat ownership, I guess!
I need to get back to that soon, once things slow down at work (usually mid January or so) ...
PS - that 4500 has 4.2V/cell fully topped off, and you take it down to 3.7V ... stores at 3.85V ...