@airamnire So to me the bigger picture is that many people start with an ideology and build their training from there, instead of training the dog infront of them. Or actually understanding the science.
This goes for balanced trainers and R+ only trainers. And the divide / arguments / blog wars have done nothing but drive people into corners and stop progress. Zak George is making a shit ton of money off of DogDaddy and these fights he stirs up.
I think it's well established that teaching basic obedience, sits etc is best done reward based.
But the short answer to your question is that if r+ only was just as effective as using all 4 quadrants, there wouldn't even be a discussion. But in reality all animals learn from the quadrants. All of them.
Take reactivity - and my dog for an example. Two R+ trainers told Fry's previous owners that he had bad genetics and needed to be euthanized because their methods failed. All of them. BAT, LAT, scatter feeding etc. We adopted him after watching how they handled him, and having a trainer we respected do an evaluation. He is now a near perfect dog. No DogDaddy crap, just rewarding wanted behaviors and correcting unwanted behaviors.
He's now a near perfect dog. We're working get corrections left behind, and without his prong collar, he is still far better behaved that 90%!of the dogs we see walking , and I can redirect him from a barking dog with a simple "touch" command. (Hit your nose to my palm)
My methods were very much like Tom Davis - these methods work, and wrk well without the negative boogie man bad outcomes that some claim. Why use these methods? Because they work.... you can see it on YouTube and in reality everyday, and there's a reason why we don't see R+ trainers making videos like many balanced trainers. To stop a behavior, it is far more effective to correct the unwanted behaviors and reward the desired behaviors, while working to understand the root cause.
On the ecollar question. There are good and bad ways to use it. For recall, allow level stim is like tap on the shoulder. My experience is that once a good recall has been taught, and the ecollar has been layered on top of a solid recall you have a much more reliable recall. My dog had a better recall after 2 months than people I've seen welling reward only for 2 years. No pain, just a very low level tap on the shoulder. So the short answer is - I use it because it works better.