Depends what you're trying to accomplish, I guess. Vocal is twice the price as Medium monthly.

I find Medium better for monthly income, although it's really not more than side-gig income at this point. I do hope it becomes more eventually.

As for Vocal, like I said, I really only use it for the challenges and often, after a challenge is over, I import my Vocal stories over to Medium.

There's no harm in giving it a try, especially if you write fiction because there are often fiction challenges going on there.