I've been using Rachio about 6 months now, and I'm still loving it.
Suggestion: It would be really nice if the home screen could be rearranged. What I do most often, besides manually turning zones on and off, is edit the watering schedule. It would be SO nice if it would appear at the top of the home screen. The status display is nice, but it should appear last unless there is a change or problem (in which case it should pop to the top, outlined in a color indicating severity). Likewise, the weather display is nice but I get my weather elsewhere so I always ignore this one. I'd prefer this be found via a button.
Ideally, a tile editor would allow the user to rearrange the home screen items.