You will find a lot of opposition here to e-collar use. I use one myself on my current boy, as a safety measure when I let him off leash. I can interrupt any chase with it, which is all I require. I agree they are an extremely useful tool, but as with anything else can be abused. Used sparingly, they make off leash exercise possible, which is a huge benefit. My very first Basenji girl was solid on recall, and I had her back in the '60s when there was no clicker training or e-collars. I trained her the same way I trained all my dogs. Praise for good work, punishment for disobedience. No question Basenjis prefer praise! But they also respond extremely well to food rewards and I do find clicker training very effective for teaching new behaviors. However, IMO there must be consequences for bad behaviour once they understand the rules, and not everyone agrees with that these days.
I hope you will post some pictures and let us know how your training is going.