Glad to see that you are testing blocks again. I kind of think that we have really hit the limits of how far watercooling can go from a temp perspective. I really see no compelling differences in performance across the board. For me choosing these days comes down to price. I'm still using my Raystorm Pro that I bought in 2016. Purchased an AM4 kit when I moved from Intel to AMD cpu's a couple of years ago and haven't looked back since. I think that my last AM4 update will be swapping out my 5600X for a 5800X3D or a 5800X (price is silly $249 and free Uncharted game)....
It's my video card that gets swapped out more often and I am getting ticked off with the high cost of VGA blocks every time I upgrade. My latest upgrade was 5700XT to 6700XT and I picked up a Bykski block from Ali Express for under $100.
Water cooling is getting VERY expensive, compared to where it was when I started, lol....
First true watercooled vga and cpu pc built in 2004.