Boxer's drool. Pit bulls are great as long as they know you- course they bite the neighbors kid, then your screwed. Shepards shed, can be agressive. Labs tend to have a strong body odor, shed, but are great dogs overall.
Look I have friend that was in a similiar situation. He had young kids, his wife has allergies, but wanted a dog that was a real family dog, but also one he could take hunting if he chose to, one that is smart, and very trainable, that doesn't shed, is overall friendly.
He chose a VIZSLA- which is a Hungarian pointer but also a very beautiful breed of dog, my buddy always comments on how good his dogs look. They are very friendly, good with kids, they don't shed, and they are very obedient, trainable dogs but also very energenitic- so you can take em' to the park, throw some frizbee's and they would be great for that. You can also leave em' off the leash around people or other dogs and not have to worry about the dog attacking people or other dogs. Basically they love to play, love to be obediant, but also will bark if they don't know you- they look somewhat like a pit if you we're to crop the ears but much more tame and friendly.
Breed Info:
The Vizsla is a sleek, muscular, medium-sized hunting dog with a beautiful rusty-gold colored short coat. The front legs are straight. The head is lean, chiseled and aristocratic, with a long tapering muzzle. The muzzle is neither pointed like a Dachshund nor square like an English Pointer. The slightly domed skull is broad between the ears and has a line up the middle of the forehead. The round-tipped ears are pendant and rather long. The neck is muscular, without dewlap. Its musculature is well developed over the entire body. The tail is docked to 2/3 its original length. The eye color blends in with the coat color and the nose is brown. It has a developed jaw, porcelain-white teeth and a distinguished, robust, elastic gait. The hair is short, abundant, and tight to the whole body. The coat can be solid golden rust in different shadings. In some standards, solid dark mahogany red and pale yellow are faulty, and any noticeable area of black in the coat is a serious fault. Height: Dogs 22-26 inches (56-66cm.) Bitches 20-24 inches (51-61cm.)
Weight: Dogs 45-60 pounds (20-27kg.) Bitches 40-55 pounds (18-25kg.)
The Vizsla is a Hungarian hunting dog which probably descended from two ancient breeds: the Transylvanian hound, and the Turkish yellow dog (now extinct). In more recent times, the blood of the German Shorthaired Pointer and the Pointer has been added to the Vizsla. After World War II, the breed was nearly extinct. Hungarians saved some individuals and built the breed up again. After World War II, when Russians took control of Hungary, the native Hungarians feared all the Vizsla would be killed by the Russians, because owning a Vizsla was a symbol of aristocracy. Some devotees smuggled Vizslas out into Austria and to other countries, including America. The name "Vizsla" in Hungarian means, "pointer." The Vizsla is a fine retriever with an excellent nose, and is a good small game and bird hunter and pointer - even on marshy terrain. They have also been successful obedience competitors. The breed's gentle, friendly disposition makes them well-suited to their role as a family companion dog.