I like that it's a web based tool that allows me to monitor my site's performance. The UI could be improved but I'm giving it a chance to grow. I do not dislike anything about this tool. I think it's a great tool for monitoring your site's performance. I have noticed that my site's speed has increased. It's not as fast as it used to be. It's still fast but it's not as fast as it used to be. I like how easy it is for me as an admin, or developer of any size project team -to set up rules which can be used across multiple projects without having to re-enter them each new one we begin working upon! It's not perfect but seems stable enough so far; no major issues have been found yet when using this tool within our organization thusfar. We're able to easily see where bottlenecks may exist before they become problems at scale.