[deleted] I've used both but when Google screwed over third party YouTube apps recently I tried grayjay because there were like one of the only options that managed to evade whatever Google did behind the scenes to break functionality for third party YouTube apps and I liked it so much I stuck with it.
For me the biggest reasons I love it are the great functionality/UI
And that you can use it to watch content from other platforms like rumble, twitch etc. it's nice having all that content in one place.
I'm sticking with it for the foreseeable future. To me it's just a better product all around than most of the other alternatives.