I have the Dogtra and it works great; has many levels of stimulation and a long range. The Ecollar gave them the freedom to be off leash. Whenever they smell a deer or see deer or any critter, they come back to me without me having to recall. I am not sure if they are 'collar-smart' so I don't want to test them on wild life without the Ecollars.
I am considering buying an e collar, do you mind share how many hours does your dogstra last with normal use after one full charge? I can't seem to find this info on their website. Which series is yours? Thanks so much!