I agree rescuing is wonderful. In my case I have two purebreds. I needed to know how big my dog would be because I lived in an apartment with a strict weight limit. I couldn't find a shelter pup that was grown and under the limit, the puppies it was hard to tell what they might end up being. The only small dogs I could find at the shelter were Chihuahuas and no offense but I don't care for them! If you want a dog for a purpose (agility), purebred is sometimes best. My next dogs (way in the future) will probably be pound puppies because I will have a house!

About traveling, I know my Director at work just got back from Chicago and flew the entire flight back sitting next to a full grown Westie. The owner bought the dog a seat. She also said her dad flies with his dog tucked under the seat. I think he has a Jack Russell.