Pest is a revolutionary testing framework with a focus on simplicity. It's been meticulously designed to bring back the joy of testing in PHP and go even further than what you can do with PHPUnit.
In my opinion, you should use Pest over PHPUnit for the following reasons:
That being said, whether you are using Pest or PHPUnit doesn't really matter. The end goal is to make your code less prone to regressions by writing an extensive test suite.