The best thing about kubestone is its simplicity, it's easy to use and configure and you can do some great testing on multiple environments with it. I like how you can test multiple clusters at once. Sometimes when running your tests you need to wait for them to finish before moving on but not that big of an issue. Not really anything. I think this program works well for anyone who wants to test their kubernetes cluster at different levels. You can easily go from one level to another and compare the results. It runs smoothly, it has good support for different languages (Java/Python), also there are some additional tools to help you with your work in kubestone like dashboards or templates etc., but i think this should be part from the product itself if not free version will do as well! In my case we need an easy way to run our tests against multiple environments at once which was missing before using KubeStane.