See @yds deals and sales post. There are indeed a few exotic flight controllers that do support dRonin. @yds even made a post about one of the listed controller. This being said for a few more $ one can get either a Seppuku or a BrainRE1. these flight controllers do have high quality components that definitively make a difference.
Regarding AIO controllers, one should avoid built-in current sensor as this is often prone to video noise. If you're after a good all in one setup, go for a seppuku together with a 4in1 ESC with built-in current sensor (Airbot and Raceflight do sell such ESCs). Everyhting would be located in a single stack. Note the for a navigation capable setup, you'd better have separate ESCs.