Buddy told me more dogs been ruined with e-collars. So no thanks..
Is your buddy saying he has ruined more dogs with an ecollar than not? Or, is he stating he knows a larger number of people who do not know the proper use of an ecollar than those that do? An ecollar is merely a tool which has no ability in and of itself to make or break a dog.
Instead, it is up to the user to acquire the knowledge to properly use the tool to its best advantage. An ecollar is not the best tool for someone to learn by trial and error, especially for the dog. Blaming the ecollar for the shortcomings of the user is not something I would expect from a knowledgable trainer.