I haven't made friends with org-mode, but I've grown to like Taskwarrior for desktop, and recently started to use Mirakel for mobile. Mirakel has a decent UI an

I haven't made friends with org-mode, but I've grown to like Taskwarrior for desktop, and recently started to use Mirakel for mobile. Mirakel has a decent UI and also syncs with your CalDAV data source.