Star and Sherman both have that type of buckle - I wouldn't buy anything else. I've had the plastic buckles break twice, and I don't trust the traditional buckles where you have a loose length of collar leftover. (if there's a way out of something, a husky will find it). I tried the martingales, I think they're really pretty. Many of the sled dog people use them, but I didn't care for them, as I adjust my collars pretty often and my dogs didn't like me slipping them over their heads.