I'm not a "win at all costs" type competitor, nor am I a breeder of any particular line of dogs with my name on it. That being said, I wouldn't match a dog into his littermate. I've already seen both dogs, had my hands on both dogs, and I probably kept the dog I like best. If the brother can win against open competition, that's great, but don't expect me to hook into some dog I bred with his brother.

To Johngilpat, matching into the same bloodline isn't the same as matching into littermates. You can't really escape showing into dogs of similar lines, but you surely can escape showing into littermates.