The Best - I only use Coastal Pet's New Earth Leashes
I have used only New Earth leashes for the past 10 years. They are soft and comfortable to hold and easy to manage. I use my leashes like one a reign; pulling the dog/s in or allowing more lead as the situation requires. I find these products to be especially suited for such control on my end of the leash. Per one reviewer who was surprised that her dog chewed the leash, that's an owner management issue, not a test of product quality.