Always wanted one of these, and it works great. the auto shut shut off works great. follows the hose with no jump offs. I do have a flat yard. haven't tried it on curves yet. Now it's just a matter of seeing how it lasts. Hopefuly will get acouple of years use before having to replace parts. At least you can order all breakable parts. Recommend! *******Update 17 April 2017  Well the gear box went out today on my sprinkler. just quit spinning while it was working great. Had an old onr from my son in law gave me that was ten years old that the wheels were falling apart on so was plenty used. Took out the transmission and put in back in mine and its running great again. Am still happy with it but suspect thats a weak spot on the newer ones like mine.