The best option for Z590 is a dual rank kit built on Samsung, you will be impressed with the performance of single rank modules at a much higher speed. For 24/7 use these are the probably the best option currently available.
If you planning on picking up and ITX or XOC motherboard with two DIMM slots this option should also be high on your list.
Asus Maximus XIII Hero Asus Maximus XIII Z590-i
Tuning
These were very easy to work with and as you will find out with Rocket Lake ratios, the memory divider is 1800Mhz J just set XMP profile and added voltage before I scaled up on Mhz, without touching timing settings I was able to hit 4400Mhz C14 pretty easy. It was easy to keep these modules Ycruncher stable and we used these modules in most of our testing.
Thanks G.Skill, these modules are an excellent choice for this platform.