Thank you. And I see now why I was confused. In my mind "Eco+" would mean the most economical not level 2. And then on the phone app they don't show Eco +. It's called "Basic". I like your idea: Forget names and use 1-5. That works for me.
Have you played with the "Automatic" mode? Did it work for you? I read one review and he said he thought it was a nice balance of "set and forget" and manually going through the assist levels.