Peter, I agree moisture sensors are more efficient than an ET controller.
The biggest issue I face repeatedly is customers who attempt to program even a simple controller like a Hunter Pro-C and screw it up beyond belief. I can only imagine installing an ET controller and the call backs.
A few of the controller I saw were quite intriguing as they are accessible via a portal for reprogramming while I'm in my office with out the cost for special software and a dedicated phone line.
However, I foresee the same problems here too - Joe Tentpeg is in his office and starts bragging about his controller, calls up the portal and the next thing you know he's screaming because the damned thing doesn't work.
There is something to the older electro-mechanical controllers for simplicity but all of my sites require multiple start times due to soil/site/water rationing and the RC-i's just can't cope.
Nice Try = You Suck Spelled Differently