Help Choosing A Puppy

Question
We have lots of room in the country for a big dog.  We want an over sized German Shepherd or a King?  Please explain the difference.  We want her to be protective of the family and her size alone should scare off anyone. We also want her to be long lived and healthy.   
We have 2 small papillon housedogs 1 female and an aggresive male. Would a male or female German Shepherd be better for home?  We were thinking of a female.  Also, if we go with a female and have her spayed.. will she become fat and lazy like my female papillon did? I go on walks but my small dogs prefer to watch me from the porch under the shade.  
Thanks

Answer
I am afraid ''oversize'' and ''King'' have no standard definitions.  They may mean something to those using them, not to others in general.  You may want to look at the Belgian Tervuren or its black cousin the Sheepdog.  They are much like the German Shepherd except larger.  

I would go with a female.  With 3 dogs, you must chance having  at least 2 of one sex.  It sounds like your male Papillon would be more likely to be a problem than the female.  

Do not worry about a spayed female being fat and lazy.  Dogs don't get fat unless they are over fed.  Although Shepherds and some other breeds often refuse to eat enough to be come fat.  

Puppies are a pig in a poke.  Even with large parents, you can't count on a given puppy getting as big as they are.  My last lab turned out much smaller than her mother and litter mates.  She wasn't the smallest of her litter, she just didn't grow as much as the rest.  One of the best sources for dogs you can count on what they will be like is the dogs.  These are dogs that lost their home, but were taken into a foster home to be retrained as necessary and placed in the right home for them.  You may find a rescue near you starting at http://www.akc.org/breeds/rescue.cfm  The rescues charge a fee to help cover their expenses, but is much less than the price of a puppy plus all its medical expenses the first year.