As for zen3 and zen4, it's been a pleasure to work with good vectorization perf, and it seems they've been doing avx512 'right', at least for HPC I know.

Add to that the 12 channels of DDR per socket and the quite generous cache, and once you've swallowed the need to buy 24 sticks for 2 sockets, these things are beautiful beasts, at what Intel has taught us, a very reasonable price (ask you OEM for prices, public prices on CPUs are nuts).