It would all boil down to personal preference I suppose. I don't care too much about pure breeds. I like my mutt and I wouldn't trade him for the world! What are you trying to get out of a dog? Some sort of job to handle? Hunting perhaps? Or maybe you want to enter dog shows? If you are just looking for a companion, I would suggest to adopt a dog from a rescue shelter even if it's a mutt. In fact, mutts normally have less medical problems than purebred dogs. Another thing to look at would be the price. The price of a true purebred would be a lot higher on its own not even counting the costs of vaccinations, and other expenses. Adopting a mutt would be cheaper, it would also most likely come with the vaccines it needs. In the end, it all depends on what you want and what you are looking to gain from this companion. Do your research, especially the special needs that pure breeds require.