Happy Things user
I am a long time Things user. I am using both the desktop and the iPhone version. After about a year ago I discovered the beta version of Things. After trying it out for a few weeks I was surprised that it didn't feel like a beta at all. It was the one to-do manager that finally worked for me. Wrote to customer support two times and got very nice and helpful replies within 1 and 2 days. If you are like me one year ago trying different approaches and nothing sticks, give Things a try.