What is better about the Godox system over the Yongnuo? I have not heard of the Godox. What can Godox do that Yongnuo can not very interested in your thoughts?
The Yongnuo (like most of its competitors) is a fairly narrow system.
To show the extremes, the YN600 is compatible with the Canon radio trigger system, they have their own compatible trigger too (YN-E3 RT).
The YN685 is an almost identical flash, but is compatible the the YN 622 trigger system.
Either of those 2 triggering systems are really good btw, I’ve used the YN622 triggers for years with no complaints at all.
The Godox 2.4g triggers though are part of a system that includes:
Speedlights (including a mini speedlights and some fully featured units with lithium batteries). They also build in transmitters to these.
Battery powered portable lighting solutions, in both ETTL and manual.
Mains powered studio lighting, including everything from entry level up to powerful Superfast heads.
Having bodged around mixing lighting for years, having a single system is an absolute joy.