You really need to narrow down your energy and exercise levels to really find the perfect breed.

Some dogs CRAVE exercise and continuous training. They need it. Without it, they get destructive, neurotic, and they become a pain to live with.

Ergo, do not get a Vizsla unless you are committed to running/jogging several miles a day or you are active in agility or flyball or competitive obedience. Vizsla need work - LOTS of it. They are so energetic that it borders on neurotic. I know several Vizsla owners, and they are incredibly fit and active (dog AND owner).

Belgian Shepherds, Standard Poodles, Golden Retrievers, and Labradors are all very energetic. Certain lines of Goldens and Labs have become bred down to have softer and calmer personalities, however, so you may luck out there. If you're looking into a Lab/Golden, your first choice should be a rescue because there are just SO many.

There is a distinction between dogs who like exercise and dogs who NEED exercise. Unless you're especially active, try looking for breeds who like exercise and stay away from dogs who NEED exercise and jobs.