Good dog breeds for apartment dwellers?

Here's the catch - my ideal dog would be a German Shepherd. I prefer large dogs with a great deal of intelligence and they fit the bill. Problem: I live in an apartment. Also, I have allergies to many dogs. It seems a GSD is out, since they're not good for apartments or allergy sufferers :( Any suggestions for large dogs like a German Shepherd that don't shed as much and are good in apartments? I don't like poodles or terriers...