Upgrade considerations aside ... the Ryzen 5 5600 or Ryzen 7 5700 with an entry-level DDR4 motherboard and a 32GB DDR4 kit offers a much lower entry point compared to a DDR5 build.
However, our test kit had quite loose CL40 timings ... the gaming RAM world is still a star contender if you want to upgrade a DDR4 system, especially at current prices. If you only have 16GB ...
If you do need some more RAM to upgrade your system with ... won't go wrong if you pick up this Corsair Vengeance 32GB DDR4 kit.
I have used Corsair memory in a previous build and this kit is just perfect. Nice lights too.