I should really migrate from GoodReads; since Amazon bought them, development has effectively stopped, and there's a lot of QoL issues.
It took me a while to migrate (you upload a CSV and it can take a few days to process it) but now I'm happy with it and a paid subscriber.
I won't say that it's great, there's a few things that annoys me, but it sure is better than GoodReads already and improvements are regularly added.
The export/import process was painless and after switching the main thing I noticed is how obvious it is that StoryGraph is under active development and Goodreads is effectively orphaned.