Well there is not generally better thing. It really comes down to preference. I know pilots that swear on kiss ultra, but also some that love betaflight. I heard that mads tech is gonna be releasing a video on kiss ultra soon, defintly interested what he thinks. You definitly have more customisation options on bf and also better support for gps and so
Well for the binding to work we have to first sort out the firmware issue. Download the latest version from caddx website thats stable and look at the .png where you can see which firmware is for what hardwaee. Make sure you choose the right one. Regarding you Moonlight updating issue, the led should turn red and after a minute or so turn blinking green. Definitly dont unplug the drone if the update isnt finished! When your sure that both the goggles and Moonlight have same firmware try binding again. For help just search on youtube for your specific Hardware, so Moonlight and goggles x. Hope this helps
Prendiamo il volo insieme e portiamo il mondo dei droni FPV a nuove altezze.