I highly recommend the Pro version if you set up sites for clients and like to truly customize the WP admin but the free version is great too. We use this on every site we build and have never had an issue. It's super easy to set up and handles user capabilities as well as the ability to reorder and customize the admin sidebar. This makes WP a true CMS. Hide/disable anything per user role or add new menu items per user roles. The plugin support has been fantastic as well. Great work Jānis!