Built two identical racing quads for 2019.
Tried to choose best possible mix of low price & good quality parts, didn't want to pick top of the line components because that would have gotten real expensive real fast.

I have designed few 3D-printable parts for this frame
Fin: https://www.thingiverse.com/thing:3447493
Uxii mount: https://www.thingiverse.com/thing:3428422

Video here is from my first flying session with one of these.

https://www.instagram.com/p/BuBae9cHrG2/