I used MX-5 on my dad's 11700K and a Raijintek Themis Evo. I haven't done any kind of stress testing or benchmarking but idle temps were good. I was NOT expecting it to be such a thin/runny thermal paste. I knew they said it was more spreadable but dang.
It seems wrong that the i9-10900K is being compared to the R9 3900X since the actual retail prices put the 3900X with the i7-10700K (based on preorder prices), and that's without factoring in the cost of a cooler.
I wish Logitech would make a true successor to the G700/G700s. The G703 is missing too many buttons and the infinity scroll and I don't like the shape of the G604. It's too narrow in the back and doesn't feel good in my hand. I hope my G700s lasts another few years.