I like Italian Greyhounds. There's one in our neighborhood, and we meet him pretty regularly on walks with his owners (a couple of Aussie transplants). Enzo is a cutie and very fast and athletic, and he and Shelley get on like a house on fire. Of course he can run circles around even a very fast Lab like mine -- there's a convenient polo ground near our house where we can let the dogs really open it up, so long as the ponies aren't using the field.
I do worry about the breed's fragility - Enzo looks and feels like he would shatter if you dropped him.
I have a friend who has a couple of IGs. She has had one break her leg jumping off the sofa. If I were involved in the breed, this would be a concern to me. BTW Rambo was certainly speedy. The dogs would all play in the back yard and he would just run around them in circles! It was pretty hysterical.
susie