From what I've read in the DAN thread you will have better temps with the 3600 than the 3700X.
If you already have the 3700X I think you should keep it unless temps are too high, you'd have to sell it and then buy a new 3600; it'd probably end up being like what a $50 difference? Or just wait for 4600? lol
True, but then what is too high for temps really? And anyone that knows when the 4600 might drop, isn't that like Q3 2020?...