3 Vizslas/one walk using no-pull harnesses (L to R: Csilla, Lyra and Zene)
Which Types of Collars and Harnesses are Safe for Your Dog? by Dr. Sophia Yin
Dr. Yin shares an excellent overview of a variety of common collars and harnesses. None is perfect. They are all just tools. But some are more likely to cause problems in your pet or may just provide a less than ideal match for your needs. In case you're wondering which I prefer—ideally my dogs can walk on leash with the flat collar that they wear regularly. But for those dogs that tend to pull (or when I walk multiple V's) I recommend a front-attaching harness or a head collar of some sort.
Read the entire article: http://drsophiayin.com/blog/entry/which-types-of-collars-and-harnesses-are-safe-for-your-dog
*** Please no choke chains or prong collars on a Vizsla.