Here's a link to a new video by @TheGoodDogTraining (see below) I recently picked up the ez 900 and was waiting to train my dog with it. After watching Sean O'shea work with another version of e collar (ez400), I was able to recreate what he showed with my dog later that day. ez 400 has similar features as 900 that allow for on the fly ramping up. Dash35 has a side by side video too. After watching that one, I"m glad I got the 900. my dog now a days has low prey drive (was a 100/100 but we trained it out) but she still gets all revved when she sees another dog, even if its a friend. using what Sean shows in the video I was able to break up the locked in mindset and even have a successful recall from 30 yards away. (before, she would be having too much fun chasing and playing with her friend and tune me out. now I can get a fast recall as if we were alone in the park). Hope the video helps you as much as it helped me. on face book @TheGoodDogTraining kzfaq.info/get/bejne/qpqleM2dldvacaM.html

Wrong type of video, either tool will work… You should be going to a trainer not watching e-collar videos