Using 2Do across Mac and iOS devices and love it.
Have tried Things, Clear, Wunderlist, Toodledo, Reminders and finally 2Do which is perfect for me and fills all the gaps I ran into with others. I wanted something that synced with iCloud/Reminders, but something more robust than Reminders.
With 2Do you can keep things as simple as you want, or dive into layers of features like tagging, time and date start/due/duration, actions, attachments and more. Syncing with reminders lets me use shared lists also that I can sync with my wife. The desktop app is likewise fantastic!
Oh, and want to export your data? Simple...unlike trying to move from Wunderlist when I switched over to 2Do.
dbcboy about 2Do - Todo List, Tasks & Notes, v3.7.1