Just found this thread today. Honestly, you gotta be really careful with the R6 II because that micro-HDMI is so fragile... I have seen so many people...
Coming back to this... unfortunately, I think you are gonna be disappointed with both options if you expect them to magically solve thermal issues in ...
ngl I'd be a bit careful with third party gear on that new R7 shoe. Since you're worried about Godox reliability, maybe look at the Meike MK-320 TTL S...
Sadly, most cages I tried felt like handling a sharp brick tho. Just grab any newer Tilta rig. You dont want something that blocks your dials...