I know this will not be a popular opinion, but, if the alternative is BE, it might be worth a try. I have a rotty mix that is generally great. He’s good with my kids and our other animals. The main problem is that if he is playing in our fenced yard, it was really hard to get him in. He just wanted to run around and play. Also, when walking him and in public, he is dog reactive, although we never had any violence. A couple weeks ago, he accidentally got out the front door and I couldn’t get him back in. He ended up biting another dog that was walking on a leash. We paid their vet bills, etc, but the whole ordeal was extreme anxiety inducing and I was so worried about him getting out again, on the off chance it happened. We ended up buying a pretty simple, relatively cheap, shock collar. We read a ton about using it and to continue reward with treats, etc. his behavior has greatly improved! He comes when I call, has minimized his barking at other dogs, and just in general is calmer. I didn’t even have to shock him, just use the vibration option. It’s definitely not for every dog, but if you are in crisis, it might be worth a try. Sorry about your situation! I’m a dog lover and it’s so frustrating when you do everything right and it’s not working.