Andrei I have it installed and setup mostly. Still working on other parts of my infrastructure atm so I haven't had the chance to see how well it works with Enhance. Currently, I love it. It's super simple and would recommend.
It doesn't have the amount of plugins that whmcs does, but, it really doesn't matter to much as Clientexec has the 'main' ones. If you have the skill set to edit the software to your liking its even better. Plus the creators are very active on Discord for questions and feeback.