depends on whether you want a completely-drm free copy with the cost of no cloud save.
edit 1: personally, I would only buy the steam version if you plan to play the game across multiple devices (steam deck when you're not home, desktop when you are home, etc.)
edit 2: also with the itch version, unless you use the itch launcher, you will need to manually update the game by downloading the game and replacing the files and .exe.
Just to add more food for thought to help with your overall decision