Had me until "Obsidian" - absolute worst thing ever for my ADHD. Hours spent tinkering ... experimenting with plugins. I was on the verge of developing plugins before I realized: I wasn't getting anything done. I gave up and went with OneNote. The freeform canvas is a godsend for my ADHD (I am able to lay things out spatially left and right), but I'm not able to tinker with it as much anymore.