Diatone MXC 369 strip-down and re-build, all items conformally coated and the stack tops protected with GepRC 20x20mm insulation boards.
Betaflight 4.2, ESC updated with JazzMaverick BLHeli to allow bi-directional communication and RPM filtering.
Runcam phoenix 2 (Joshua edition) connected with Runcam Camera control and VTX set up with TBS Smart Audio allowing full control of camera, VTX settings and Betaflight settings (PIDS, Filters, etc.) through my Tango2 radio.
Its a great quad, it flies lovely. Smooth and cinematic on 4s and fully acro capable on 6s.