Yeah I realize most of what I said is incoherent, and no matter how I try to think about it, the 5800X is probably not worth it. So it's really either 5600X or 10700K.
We have around 10-20% better performance for the 10700K in rendering as you said, and slightly better performance from the 5600X in games and editing. Does that remain true when you go up on overclocks for both ? And do the thermals and power consumption discrepancies remain at a similar ratio when the overclock makes both of them go up too ?
If I really think about it, my time in video work is mostly going to be editing for like 90% of the time, and 10% rendering anyway, since the type of videos I do require quite a bit of time in editing. So maybe the gap in rendering doesn't matter that much, and I'm trying to shift to better GPU use in rendering with Voukoder and other plugins as of recently anyway.
My 1070 is the EVGA SC Gaming Black Edition, I haven't overclocked it myself but I believe it is by default like most aftermarket graphic cards ? My PSU is fine for stock clocks I suppose yes but how far will I be able to go in overclocking with it ? Is 5.1 GHz on the i7 or 4.7 GHz on the Ryzen 5 (which I believe is the typical max OC target ?) manageable with a good motherboard and that PSU ? (if the cheaper and equally good move is a better PSU and a cheaper motherboard then I'm down obviously but I doubt it based on what you said with the mobos)