I tried both and am using Obsidian now.
I wanted to use logseq (I felt good about "Obsidian, but open source") but when I tried to find some text in a page I was writing it didn't work. I'm a total logseq noob but as far as I could tell I needed to install an extension/plugin to search through the page, which was weird. Plus, the plugin didn't work for me (I typed in the thing to search for, clicked "go find it" and nothing happened, I think - it's been a while and I didn't use it much).
I kinda boggled my mind that logseq wouldn't have a 'Find' feature for finding text in the page I'm editing.
Please tell me that I missed something obvious so that I can feel dumb for missing that obvious thing but happy that I can take another look at logseq :)