I haven't tried any other version than what I have, but for what it's worth we have had "chicken guard extreme" setups (2 of them) for about 2 years now. They are pretty pricey, but worth every penny in my book. The only issue I've ever had with them was I had one get wound up around the spindle wrong one time and had a problem with it for about a week an then I was finally able to figure out what the problem was (user error - I had it attached off to the side so it was sliding off the spool) and that one has worked well ever since and the other one has been working perfectly since I installed it. There is a battery low warning light, which is really convenient. I've probably changed the batteries twice since I bought them, so maybe every 8 months. I have the door and motor casing installed on the outside of my coops which has worked fine - even in our icy Maine winters, but I'm thinking about installing the motor casing on the inside of the coop for better longevity. Seems like the motors have plenty of life left in them after 2 years. I can't tell you how much the automatic doors have changed my life- it's pretty amazing.