Flaanimal

http://www.rodeo-labs.com/flaanimal3/

Rodeo-labs on the adventure bike wagon.

Looks pretty well thought out to me but not cheap.

Smooth looking rear sliding dropout, less stress risers than some other models.

wow there’s even a photo of actual load/deflection testing going on, in accordance with what my memory informs me is possible even an internationally recognized standard (it’s not a fatigue test though, so those dropouts may still fail, despite appearing to be much better than certain other brands)