Here a shared review of a quite cute and tiny FPV quad, the QX90.
It was unfortunately delivered to me with a built in DSM type receiver so I could not use it with my Taranis radio.
I therefore modded the electronics with another tiny board that is incredible : it integrates a F3 flight controller with all bells and whistles plus an integrated FrSky compatible receiver !
I still have some stability issues with the receiver and Taranis. I am troubleshooting with the maker of this board and will post a follow up later on.