There is no one “best” roam collar on the market, as the best collar for each dog will vary depending on their individual needs and behavior. However, some of the most popular roam collars available today include the PetSafe Flexi-Leash Collar (which can be adjusted to fit any size dog), the Gentle Leader Revolution Classic Collar (which is known for its gentle pressure and easy-to-use controls), and the iFetch Freedom Dog Toy Recall Remote Trainer.