By now most of us know Planeprint and Eclipson but I just found a 3rd option for highly vetted & detailed 3D printed aircraft files in a payware option.

Flightory offers several UAV / FPV dedicated options including the stingray shown in the picture above, a flying wing with an intergraded quad copter VTOL option.

Check it out in action:

There YouTube channel has a good collection of how 2 and demo videos