Ive tried them all. I have one like Nla has. It works good. I have a couple of the Ugly dog ones too. I use them on my bulldog. But the southern cross seem to work the best. $150 a pop to fix them really puts a hurting on the pocket book! The sourthern cross ones take a beating that the collar would otherwise be taking. I was on a good run till lately.

The ozzies make another one like NLA has that is plastic and glows in the dard with firehose Id like to try.
