I've been using Ellipsis for a few months now. I have zero regrets about paying for it now and likely will pay them more in the future as their new features ship.

For a solo engineer like me who's working in multiple codebases across multiple languages, it's excellent as another set of eyes to catch big and small things in a pull request workflow I'm used to (and it has caught more than a few). I'd argue even as a backstop for catching edge cases/screwups that may lead to wasting my time that it's already more than paid for itself.