Still ended up with a few frustrating issues, but overall feel good about the product we went with.
I am still considering what system to buy. What were the frustrating issues you ran into with the Rachio?
Sorry, just seeing this now. The biggest issue was that the Rachio connects via 2.4GHz, but not 5GHz. We have a time capsule we are using as a router, which supposedly broadcasts on both, but we could not get it working. We were having a major sprinkling system overhaul at the same time and the guy who was doing the controller install was pretty good with technical stuff (used to install comcast systems), but after several hours we gave up and he just installed a new comcast modem that we'd been putting off.
Other than this, the main problems were wiring ones--on these, I don't know if the guy who re-wired the system screwed something up when transferring the wires, or if our old system had the same problems but wasn't sensitive to it. My guess is the first. On this, Rachio was great--we called them on a Sunday morning and the rep helped us troubleshoot everything and pointed us in the right direction.
So far, all seems to be working well and it's fantastic to be able to turn a zone on/off from the phone. We've had some weirdly long watering times that I need to look into, but I think it's because it's supposed to top 100 here, so the system is adjusting.