Mutt vs Pure Breed

For my Christmas present, Matt has offered to get me a dog. We won't actually get one until after the honeymoon, but I have literally spent years trying to decide on the perfect dog to get. Since I have been volunteering at an animal orphanage, it is hard for me not to consider adopting. The only thing about adopting is that you aren't guaranteed to have a purebred dog(which Matt wants). Look at how adorable these mutts are..Agh I love them!

Here is one of the purebreeds that we are considering...

I am dying over this Boston Terrier! I just want to cry looking at him. What to do?? They are all so adorable!!