As crio said-If you are not giving them a job, they are going to be a big pain in the butt.
Honestly, I'd say go to your local humane society/spca and look around. Looks are certainly easy, but you'll want to match the energy level ot you-and a shelter employee or volunteer can certainly help you with that.
As Crio said-that's not to rare in terms of looks-like if it's the color you like, tons of dogs have those colors!
Also-in terms of protecting your family or being wary of strangers...Unless the dog is blind and deaf, he will

No matter the breed.