I've had one mixed breed dog and full bred dogs. When it comes down to it, I love all of them for their different personalities. What really matters to me is that I am not buying a dog, but adopting a dog. So, I will always adopt. Other factors do come into play, I prefer smaller breeds and low-shedders. When I adopted my mixed breed dog (dorkie - doxie/yorkie), he fulfilled all of those requirements, I adopted him at the dog warden, but it did take me about 3 months of searching on petfinder to find the dog who I felt would be the right fit. I *almost* adopted a pair of doxies, except that they thought that the female was pregnant... I was not up for that challenge!