I have this problem. I can't stick with a piece of software and tend to hop around a lot.
At work, I have no choice. I need to use Outlook and Microsoft Tasks, both which I absolutely hate.
At home, I have one requirement. The tool must not be tied to a platform. Up until last year, I had an iPhone and my laptop ran Linux. Now I'm all Apple, but I still use Linux occasionally. And even Windows sometimes. I like Apple's Reminders app, but it's very Apple specific. So, when I enter a task, I can't see that task on a WIndows or Linux PC without adding friction to the system.
Does anyone have a pretty frictionless solution that can work across Mac/Windows/Linux/iPhone/iPad/Android?