this is #2 i had to get. the first one did good for over 2 years until a power serge took it out. i have 4 danes and 3000 feet fenced in and would tell anyone to use this..
I had made a purchase on an "off-brand" fence and let me tell you I had the worse experience! The cost for a PetSafe brand is worth the small difference. I have had zero issues with my pet safe fence and all my PetSafe products.