The intimidating thing about OmniFocus is that it doesn’t have a set method for task management. It has been advertised as a great app to use if you’re into GTD though. It’s up to the user to figure that part out. OmniFocus lets you create your own task management system which can be crazy wild if you don’t really have a solid task management system to begin with.
Things has an opinionated idea of task management is perfect for users who don’t want to build their own setup. Just follow the way the app does task management and you can just get on with work.
I’ve slowly adapted different parts of GTD into my own Frankenstein GTD setup which works for me but most definitely won’t work for someone else.
I’ve used Things in the beginning as a starting point. What workflows did I like? What workflows do I think needs improvement? Can I do it in OmniFocus (my preferred task manager)? I’ve been able to mimic some Things 3 workflows into my life and discarded some other workflows that don’t fit my situation. I had tried this as an experiment a while back just to see if I can integrate some Things ideas into my OmniFocus workflow. It’s been a while since I’ve looked at Things 3 but I’ve stayed in the OmniFocus ecosystem. I don’t know what’s changed since the last time I looked.
If Todoist works for you, I’d rather focus on that app and see if I can find workflows that will address a deficiency in your current workflow.
I don’t think there will ever be an app that will fulfill 100% of anyone’s needs. It’s not about the app, it’s about the system. We can switch to different apps to see which app fits most of our needs. If it can fulfill 80% of your needs, stick with it and find additional workflows that can hopefully fill in the remaining 20%. I’ve stuck with OmniFocus as my second brain and used a bullet journal and Fantastical for my daily driver.
I’d rather have an evergreen productivity system that can adapt to whatever tool I choose. I imagined something about what Bruce Lee wanted to do in martial arts. He explored different martial arts and took what he needed to address deficiencies in his own fighting style.